Main Study - webfs.oecd.org

SSES

Main Study

Parent Questionnaire School Name: _________________ Parent Username: _____________

2

Study on Social and Emotional Skills (SSES)

Thank you for taking part in the SSES study.

The Study on Social and Emotional Skills aims to assess the social and emotional skills of students at

multiple international locations, and to examine the factors in students’ home, school and community

environments that promote or hinder development of these skills.

All information collected will be kept strictly confidential. To ensure that your privacy is maintained, only

combined results from the study as a whole will be analysed and reported. No individual information will be

released to any person or department except at your written request and on your authorisation.

Participation in this study is voluntary. You are free to withdraw from the study at any time or choose not to

take part. Please continue if you agree to take part.

There are no ‘right’ or ‘wrong’ answers. Please answer each question as best as you can.

PLEASE READ THESE INSTRUCTIONS Use black pen when completing this form.

If a mistake is made, correct it this way: Leave answer circles blank if you cannot or do not wish to respond.

3

SECTION 1

4

In this section, some students are described to you. Suppose that they are people that you know.

XXV001

1 How much do you agree that each of the following students is a hard-working person?

(Please select one response in each row.)

Strong

ly disagr

ee Disagr

ee

Neither agree

nor disagr

ee Agree

Strongly

agree

a.

PAV00101

[Mia] studies hard and gets very good grades. She always does her homework, finishes her assignments, and is always prepared before starting the class.

How much do you agree that [Mia] is a hard-working person?

b.

PAV00102

[Peter] usually gets good grades. He sometimes has trouble paying attention in class, but usually completes his homework on time.

How much do you agree that [Peter] is a hard-working person?

c.

PAV00103

[Tom] often forgets to do his homework, is rarely prepared before the class starts, and does not care about his grades.

How much do you agree that [Tom] is a hard-working person?

5

XXV002

2 How much do you agree that each of the following students handles his/her emotions well?


Strongl

y disagre

e Disagre

e

Neither agree nor

disagree Agree

Strongly agree

a.

PAV00201

[John] never looks stressed. He is calm and positive even before an exam.

How much do you agree that [John] handles his emotions well?

b.

PAV00202

[Mary] is usually calm during classes, but there are a few moments when she can get upset and change moods.

How much do you agree that [Mary] handles her emotions well?

c.

PAV00203

[Anna] is frequently in a bad mood and gets upset every time someone does something she doesn’t like.

How much do you agree that [Anna] handles her emotions well?

6

XXV003

3 How much do you agree that each of the following students is a kind person?


Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a.

PAV00301

[Marc] is nice to almost everyone. He is always willing to help or lend things to his classmates.

How much do you agree that [Marc] is a kind person?

b.

PAV00302

[Wesly] is helpful to most of his friends but there are a few of his classmates that find him unfriendly.

How much do you agree that [Wesly] is a kind person?

c.

PAV00303

[Maria] often argues with her classmates and can be quite rude. She never lends her things to her classmates.

How much do you agree that [Maria] is a kind person?

7

XXV004

4 How much do you agree whether each of the following students is a social and outgoing person?


Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a.

PAV00401

[Jennifer] has many friends and likes to talk with her classmates. She is very active and leads many school activities.

How much do you agree that [Jennifer] is a social and outgoing person?

b.

PAV00402

[Alexandra] likes to be with her friends but there are days when she is quiet and does not talk with other classmates.

How much do you agree that [Alexandra] is a social and outgoing person?

c.

PAV00403

[Jack] is shy and talks very little with his classmates. He does not like to talk in front of other people and prefers to be left alone.

How much do you agree that [Jack] is a social and outgoing person?

8

XXV005

5 How much do you agree that each of the following students enjoys

learning new things?


Strong

ly disagr

ee Disagr

ee

Neither agree

nor disagr

ee Agree

Strongly

agree

a.

PAV00501

[Mario] is very interested in knowing about the world. He is curious about different places and people. He also loves reading about different things.

How much do you agree that [Mario] enjoys learning new things?

b.

PAV00502

[Christine] is sometimes interested in learning about other places and people but she rarely reads about different things.

How much do you agree that [Christine] enjoys learning new things?

c.

PAV00503

[Timothy] is not interested in learning about other places and people. He does not like to explore new places and does not like reading about different things.

How much do you agree that [Timothy] enjoys learning new things?

9

Instruction:

On the following pages you will find a series of statements that may or may not apply to your

child. There are no right or wrong answers – your own opinion is all that matters. Please answer

every statement, even if you are not completely sure of your response.

PAAQ001

6 Please read each statement and select one of the five answers to indicate the extent to which you agree or disagree with that description of your child.


Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a. PAA0301 My child is not easily upset. b.

PAA1001 My child is willing to be friends with people from other cultures.

c. PAA0701 My child sometimes behaves irresponsibly. d. PAA0801 My child is full of energy. e.

PAA1102 My child thinks most of their classmates keep their promises.

f. PAA1601 My child finds new ways to do things. g. PAA0901 My child often feels sad. h.

PAA1701 My child is careful with what they say to others.

i. PAA1401 My child is a leader. j. PAA1802 My child likes to help others.

10

PAAQ002



Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a. PAA1702 My child can control their actions. b. PAA0302 My child keeps their emotions under control. c.

PAA1602 My child is original, comes up with new ideas.

d. PAA0902

My child believes good things will happen to them.

e. PAA1402 My child wants to be in charge. f. PAA0202

PAA0272

My child is outgoing and sociable.

g. PAA0502 My child is helpful and unselfish with others. h. PAA0702

PAA0772

My child is reliable and can always be counted on.

i. PAA0401

My child is curious about many different things.

j. PAA1301

My child keeps working on a task until it is finished.

11

PAAQ003



Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a. PAA0402 My child is eager to learn. b. PAA1501 My child is relaxed and handles stress well. c.

PAA1703 My child thinks carefully before doing something.

d. PAA0203 My child has many friends. e. PAA1002 My child asks questions about other cultures. f. PAA1803 My child gets along well with others. g.

PAA1403 My child knows how to convince others to do what they want.

h. PAA1302 My child makes sure that they finish tasks. i. PAA0703 My child often forgets their duties. j.

PAA0503 It is important to my child that their friends are okay.

12

PAAQ004



Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a. PAA1104

My child believes that their friends will never betray them.

b. PAA0404 My child likes to know how things work. c. PAA0504 My child can sense how others feel. d. PAA1804 My child works well with other people. e. PAA0904 My child is always positive about the future. f. PAA0803 My child is less active than other people. g. PAA0303 My child gets mad easily. h. PAA1003

PAA1073

My child feels comfortable in new cultural environments.

i. PAA0204 My child likes to be with their friends. j. PAA1502 My child gets nervous easily.

13

PAAQ005



Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a. PAA1404 My child enjoys leading others. b. PAA0505 My child knows how to comfort others. c. PAA1303 My child gives up easily. d. PAA0704 My child avoids responsibilities. e. PAA0304 My child knows how to control their anger. f.

PAA1704 My child avoids mistakes by working carefully.

g. PAA1503 My child worries about many things. h. PAA1603 My child has difficulty imagining things. i. PAA0802 My child shows a lot of enthusiasm. j. PAA1103

PAA1153

My child believes that their friends can keep their secrets.

14

PAAQ006



Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a. PAA1805 My child starts arguments with others. b. PAA0903 My child wakes up happy almost every day. c. PAA1105 My child believes most people are kind. d. PAA0403 My child likes to ask questions. e.

PAA1605 My child sometimes finds a solution other people don't see.

f. PAA1304 My child finishes what they start. g.

PAA0804 My child has less energy than their classmates.

h. PAA1504 My child is afraid of many things. i. PAA1004 My child wants to travel to other countries. j. PAA0205 My child likes to be alone.

15

PAAQ007



Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a. PAA0805 My child likes sports where they can run. b.

PAA0206 My child likes talking to a lot of different people.

c. PAA0905 My child enjoys life. d. PAA1305 My child leaves things unfinished. e. PAA1505

PAA1575

My child panics easily.

f. PAA1106 My child distrusts people. g. PAA0405 My child likes learning new things. h. PAA1806 My child treats others with respect. i. PAA0305 My child changes their mood a lot. j.

PAA1006 My child likes hearing about other cultures and religions.

16

PAAQ008



Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a. PAA0705 My child keeps their promises. b. PAA1607 My child likes to create things. c.

PAA0207 My child likes to spend their free time with others.

d. PAA1706

My child says the first thing that comes to their mind.

e. PAA1807

My child is always willing to help their classmates.

f. PAA0306

My child has unpredictable emotions and moods.

g. PAA1007

My child is not interested in other countries and cultures.

h. PAA0907 My child looks at the bright side of life. i. PAA1506 My child often feels nervous. j. PAA0806 My child tires out quickly.

17

PAAQ009



Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a. PAA1507 My child is often worried about something. b.

PAA1306 My child stops when work becomes too difficult.

c. PAA0406 My child doesn't like learning. d. PAA0308 My child stays calm even in tense situations. e.

PAA1707 My child likes to make sure there are no mistakes.

f. PAA1406 My child dislikes leading a team. g.

PAA1108 My child believes that other people will help them.

h. PAA0506 My child predicts the needs of others. i. PAA1608 My child has a good imagination. j. PAA0706 My child is a responsible person.

18

PAAQ010



Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a. PAA0208 My child makes friends easily. b. PAA0809 My child is slow to start in the morning. c. PAA1808 My child is ready to help anybody. d. PAA1407 My child likes to be a leader in their class. e. PAA0507 My child understands what others want. f.

PAA0707 My child often forgets to do things they promised to do.

g. PAA1708 My child stops to think before acting. h. PAA1109 My child believes that most people are honest. i. PAA1309 My child hates leaving tasks unfinished. j. PAA0908 My child is a happy person.

19

PAAQ011



Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a. PAA1609 My child finds it difficult to create new things. b.

PAA0708 My child forgets to do work they were asked to do.

c. PAA1008

My child learns a lot from people with differing beliefs.

d. PAA1110

PAA1180

My child trusts others.

e. PAA1310

PAA1380

My child finishes things despite difficulties in the way.

f. PAA0407 My child loves learning new things in school. g. PAA1809

PAA1879

My child is polite, courteous to others.

h. PAA0209

PAA0279

My child has difficulties making friends.

i. PAA0508

PAA0578

My child is warm toward others.

j. PAA1408 My child likes to be the leader of a group.

20

PAAQ012



Strongly

disagree

Disagree

Neither

agree nor

disagree Agree

Strongly

agree

a. PAA0509

My child rarely asks others how they are feeling.

b. PAA1409

PAA1479

My child is dominant and acts as a leader.

c. PAA1509 My child gets scared easily. d.

PAA1009 My child loves to learn about other countries and cultures.

e. PAA0810

PAA0880

My child maintains high energy throughout the day.

f. PAA0910

PAA0980

My child expects bad things to happen.

g. PAA1610

PAA1680

My child has little creativity.

h. PAA0408 My child finds science interesting. i. PAA1709

PAA1779

My child often rushes into action without thinking.

j. PAA0310

PAA0380

My child often feels angry.

21

XXB000P

18 Please indicate to which extent each of the listed behaviours is an accurate description of your child, using the following scale:


Not at all

accurate

Slightly

accurate

Somewhat

accurate

Very accura

te

Perfectly

accurate

a. PAB009

Physical problems (aches or pains) without known medical cause

b. PAB013

Does house chores (e.g. cleaning room, making bed, etc.)

c. PAB022 Is too dependent on adults’ help d. PAB026 Is honest, always tells the truth e. PAB027 Demands a lot of attention

22

SECTION 2

23

PAQM001

19 Please {VERIFY_SPECIFY} the month and year of birth of your child.

PAQM00101

Month

PAQM00102

Year

Enter Month and Year

_______ _______

PAQM002

20

PAQM00201

Who is completing this questionnaire?

(Please select one response.)

Mother

Other female guardian

Father Other male guardian Other

PAQM003

21 How old are your child’s parents/guardians?

(Please select one response in each column.)

PAQM00301

a. Mother or other female guardian

PAQM00302

b. Father or other male guardian

24 years or younger

25-29 years

30-34 years

35-39 years

40-44 years

45-49 years

50 or older

[Country specific] [Country specific] Deceased

24

PAQM004

22 How many of the following people usually live at home with your child?

This is the home where your child mainly lives but could include living in more than one home if it is an equal share arrangement.


None One Two

Three or

more

a. PAQM00401 Mother(s) (including stepmother or foster mother) b. PAQM00402 Father(s) (including stepfather or foster father) c. PAQM00403 Sisters d. PAQM00404 Brothers e. PAQM00405 Grandparents f. PAQM00406 Aunts and uncles g. PAQM00407 Others

PAQM005

23 How many siblings does your child have?

This could include other children permanently living in the home (e.g. children of relatives) as well as siblings living elsewhere.


None One Two Three

More than three

a. PAQM00501 Younger b. PAQM00502 Older c. PAQM00503 Same age

25

PAQM006

24 What is the highest level of formal education COMPLETED by the child’s parents?

(Please select one response in each column.)

PAQM00601

a. Mother or other female guardian

PAQM00602

b. Father or other male guardian

[ISCED level 1]

[ISCED level 2]

[ISCED level 3]

[ISCED level 4]

[ISCED level 5]

[ISCED level 6]

[ISCED level 7]

[ISCED level 8]

PAQM007

25 Which of the following definitions best describes the current employment situation of your child's parents?


Not working

In volunteer work or other

non-paid

activity (e.g.

studying)

In casual

or non-regular work

In regular

part-time work (less than

50% of full-time hours)

In regular

part-time work

(between 50%

and 90% of full-time

hours)

In regular

full-time work

a. PAQM00701

Mother or other female guardian

b. PAQM00702

Father or other male guardian

26

The following two questions concern the job of mother or other female guardian:

(If she is not working now, please tell us her last main job.)

PAQM008

26 What is the main job of your child’s mother or other female guardian?

(e.g. school teacher, kitchen-hand, sales manager)

PAQM00801

___________________________________

PAQM009

27 What does child’s mother or other female guardian do in her main job?

(e.g. teaches high school students, helps the cook prepare meals in a restaurant, manages a sales team)

PAQM00901 Please use a sentence to describe the kind of work she does or did in that job.

_________________________________________________

The following two questions concern the job of father or other male guardian:

(If he is not working now, please tell us his last main job.)

PAQM010

28 What is the main job of your child’s father or other male guardian?

(e.g. school teacher, kitchen-hand, sales manager)

PAQM01001 .

___________________________________

PAQM011

29 What does child’s father or other male guardian do in his main job?

(e.g. teaches high school students, helps the cook prepare meals in a restaurant, manages a sales team)

PAQM01101

Please use a sentence to describe the kind of work he does or did in that job.

_________________________________________________

27

PAQM012

30

PAQM01201

What is your annual household income? (Please add together the total income, before tax, from all members of your household.)

(Please remember we ask you to answer questions only if you feel comfortable doing so, and that all responses are kept strictly confidential.)


Less than [X1]

[X1] or more but less than [X2]




[X5] or more

PAQM013

31 In what country were the following people born? (Please select one response in each column.)

PAQM01301

a. Child

PAQM01302

b. Mother or other female guardian

PAQM01303

c. Father or other male guardian

[Country of test]

[Country A]

[Country B]

[Country C]

[Country D]

[Country E]

[Country F]

Another Country

28

PAQM014

32 What is the language most often spoken at home by the following family members?


[Assessment

language]

[country-specific 2]




[Another language]

a. PAQM01401

Your child

b.

PAQM01402

Mother or other female guardian

c.

PAQM01403

Father or other male guardian

PAQM015

33 To what extent do you agree with these statements about the area where you live?


Strongly disagre

e Disagre

e

Neither agree nor

disagree Agree Strongly

agree a.

PAQM01501 People in the area where I live help each other out.

b. PAQM01502

We watch out for each other’s children in the area where I live.

c. PAQM01503

My child is safe in the area where I live.

d. PAQM01504

When we encounter difficulties, we know where to go for help in our community.

29

PAQM016

34 How old was your child when he/she started [ISCED 0]?

PAQM01601 My child did not attend [ISCED 0]

0

1

2

3 4 5 6 7

PAQM017

35 How old were you when you started [ISCED 1]?

PAQM01701 3

4

5

6

7 8 9

30

PAQM018

PAQM019

36 Please consider the last [pre-primary education arrangement] which your child attended prior to [grade 1 in ISCED 1].

What type of provider offered this [pre-primary education arrangement]?


PAQM01801 Public management and mainly public funding (e.g. [national example])

Private management and mainly public funding (e.g. [national example])

Private management and mainly private funding (e.g. [national example])

37 Did your child regularly attend any of the following arrangements prior to [ISCED level 1]?


No Yes

a. PAQM01901 [Supervision and care (e.g. national example 1)]

b. PAQM01902 [Supervision and care (e.g. national example 2)]

c. PAQM01903 [Supervision and care (e.g. national example 3)]

d. PAQM01904 [ISCED 01 (e.g. national example 1)]

e. PAQM01905 [ISCED 01 (e.g. national example 2)]

f. PAQM01906 [ISCED 01/ ISCED 02 (e.g. national example 1)]

g. PAQM01907 [ISCED 01/ ISCED 02 (e.g. national example 2)]

h. PAQM01908 [ISCED 02 (e.g. national example 1)]

i. PAQM01909 [ISCED 02 (e.g. national example 2)]

31

PAQM020

38 Has your child ever experienced any of the following issues or difficulties?


No Yes a. PAQM02001 Low birth weight (less than [2500 g]) or premature birth

b. PAQM02002 Hearing difficulties (that cannot be corrected by a hearing aid)

c. PAQM02003 Vision difficulties (that cannot be corrected by glasses)

d. PAQM02004 Mobility difficulties

e. PAQM02005

Learning difficulties (e.g. speech or language delay, intellectual disability)

f. PAQM02006 Social and emotional difficulties

g. PAQM02007 Behavioural difficulties

PAQM021

39 To your knowledge, how many friends does your child have who are:


None or very few Some

Many

All or almost

all

There are no

children with such characteristics in our

area

Don’t know/ Not su

re a.

PAQM02101 From a different country than your child

b. PAQM02102

Of a different religion than your child

c. PAQM02103

From a different socio-economic background than your child

d. PAQM02104

Of a different race or ethnic background from your child

32

PAQM022

40 How often does your child do the following things?


Once a week or less

2-3 days

a week 4-6

days a week

Every day

a. PAQM02201 Brush their teeth b.

PAQM02202 Eat breakfast (i.e. eat more just than a glass of milk or fruit juice)

c. PAQM02203 Eat fruit d. PAQM02204 Eat vegetables e.

PAQM02205

Do at least 60 minutes of moderate physical activity throughout the day (e.g. walking, climbing stairs, riding a bike to school, [country specific], etc.)

f. PAQM02206

Do at least 20 minutes of vigorous physical activity throughout the day (e.g. running, cycling, aerobics, soccer, skating, [country specific], etc.)

g. PAQM02207 Sleep 8 hours or more at night

PAQM023

41 In general how would you describe your child's health?


PAQM02301 Excellent

Very Good

Good

Fair

Poor

33

PAQM024

42 Overall, how satisfied are you with your life as a whole these days?

The following question asks how satisfied you feel about your life, on a scale from “0” to “10”. “Zero” means you feel “not at all satisfied” and “10” means “completely satisfied”.


PAQM02401

0 1 2 3 4 5 6 7 8 9 10

PAQM025

43 Please indicate for each of the five statements which is closest to how you have been feeling over the last two weeks.

(Example: If you have felt cheerful and in good spirits more than half of the time during the last two weeks, please select the circle in column 3.)


At no time

Some of the

time

More than

half of the

time

Most of the

time

All of the

time

a. PAQM02501

I have felt cheerful and in good spirits.

b. PAQM02502 I have felt calm and relaxed. c. PAQM02503 I have felt active and vigorous. d.

PAQM02504 I have woken up feeling fresh and rested.

e. PAQM02505

My daily life has been filled with things that interest me.

34

PAQM026

44 Below are a number of characteristics that may or may not apply to you.

Please indicate how much you agree or disagree with each of them.


I am someone who...

Strongly disagre

e Disagre

e

Neither agree nor

disagree Agree

Strongly agree

a. PAQM02601

is compassionate, has a soft heart.

b. PAQM02602

is fascinated by art, music, or literature.

c. PAQM02603

is dominant and acts as a leader.

d. PAQM02604 is full of energy. e. PAQM02605 assumes the best about people. f.

PAQM02606 is reliable, can always be counted on.

g. PAQM02607

is emotionally stable, not easily upset.

h. PAQM02608

is original, comes up with new ideas.

i. PAQM02609 is outgoing, sociable. j. PAQM02610 keeps things neat and tidy. k. PAQM02611 is relaxed, handles stress well. l.

PAQM02612 is respectful, treats others with respect.

m. PAQM02613

is persistent, works until the task is finished.

n. PAQM02614

feels secure, comfortable with self.

o. PAQM02615 is complex, a deep thinker.

35

PAQM027

45 In this question, we ask you to describe how true each of the following statements are. (Please select one response in each row.)

Almost

never or never true

Sometimes true

Often true

Almost always or

always true

a. PAQM02701

The mother/female guardian understands the child.

b. PAQM02702

The mother/female guardian listens to the child.

c. PAQM02703

The mother/female guardian is very strict with the child.

d. PAQM02704

The mother/female guardian gives hard punishment.

PAQM028

46 In this question, we ask you to describe how true each of the following statements are. (Please select one response in each row.)

Almost

never or never true

Sometimes true

Often true

Almost always or

always true

a. PAQM02801

The father/male guardian understands the child.

b. PAQM02802

The father/male guardian listens to the child.

c. PAQM02803

The father/male guardian is very strict with the child.

d. PAQM02804

The father/male guardian gives hard punishment.

36

PAQM029

PAQM030

47 How much encouragement from you does your child need to do the following things?


None at all Little

Somewhat A lot

a. PAQM02901 To study hard and be responsible b.

PAQM02902 To stay relaxed and calm even in moments of difficulty

c. PAQM02903 To socialize with other people d. PAQM02904 To be kind and help other people e. PAQM02905 To learn new things

48 How often do you or someone else in your home do the following things with your child?


Never

or hardly ever

Once or twice a

year

Once or twice a month

Once or twice a week

Every day or almost every day

a. PAQM03001

Discuss how well my child is doing at school

b. PAQM03002

Eat [the main meal] with my child around a table

c. PAQM03003 Spend time just talking to my child d.

PAQM03004 Help my child with his/her homework

37

PAQM031

49 What is the highest level of education you expect your child to complete?


PAQM03101 [ISCED level 1]

[ISCED level 2]

[ISCED level 3]

[ISCED level 4]

[ISCED level 5] [ISCED level 6]

[ISCED level 7] [ISCED level 8]

PAQM032

50 During the last academic year, did you participate in any of the following school-related activities?


No Yes

Not supporte

d by school

a. PAQM03201

Discussed my child’s behaviour and progress with a teacher on my own initiative

b. PAQM03202

Discussed my child’s behaviour and progress on the initiative of one of his/her teachers

c. PAQM03203

Volunteered at your child’s school or on a school-sponsored trip

PAQM033

51 How many of your child’s friends do you know?


PAQM03301 None

Some

Many

All

38

PAQM034

52 How frequently do you know who your child is with when he/she is not at home?


PAQM03401 All of the time

Most of the time

Some of the time

Only rarely or never

PAQM035

53 How much do you agree or disagree with the following statements?


Strongly disagre

e Disagre

e

Neither agree nor

disagree Agree

Strongly agree

a.

PAQM03501

Your social skills are something about you that you cannot change very much.

b.

PAQM03502

Your emotional skills are something about you that you cannot change very much.

c.

PAQM03503

Your intelligence is something about you that you cannot change very much.

Documents

Main Study - webfs.oecd.org