Population ID
1 = Pop 1
2 = Pop 2
9 = Omitted or invalid

Standardized Grade ID
1 = Lower Grade
2 = Upper Grade
9 = Omitted or invalid

Grade ID
3 = Grade 3
4 = Grade 4
5 = Grade 5
6 = Grade 6
10 = Grade 10
99 = Omitted or invalid

Student Test Booklet
1 = Booklet 01
2 = Booklet 02
3 = Booklet 03
4 = Booklet 04
5 = Booklet 05
6 = Booklet 06
7 = Booklet 07
8 = Booklet 08
9 = Booklet 09
10 = Booklet 10
11 = Booklet 11
12 = Booklet 12
13 = Booklet 13
14 = Booklet 14
15 = PSI
16 = PSI
17 = Bridge Booklet 1
18 = Bridge Booklet 2
19 = Bridge Booklet 3
20 = Bridge Booklet 4
21 = Bridge Booklet 5
22 = Bridge Booklet 6
23 = Bridge Booklet 7
24 = Bridge Booklet 8
99 = Omitted or invalid

School ID
9999 = Omitted or invalid

Class ID
999999 = Omitted or invalid

Student ID
99999999 = Omitted or invalid

GEN\SEX OF STUDENT
1 = Girl
2 = Boy
9 = Omitted or invalid

GEN\DATE OF BIRTH\MONTH
1 = January
2 = February
3 = March
4 = April
5 = May
6 = June
7 = July
8 = August
9 = September
10 = October
11 = November
12 = December
99 = Omitted or invalid

GEN\DATE OF BIRTH\YEAR
1 = 2006
2 = 2007
3 = 2008
4 = 2009
5 = 2010
6 = 2011
7 = 2012
8 = Other
99 = Omitted or invalid

GEN\OFTEN SPEAK <LANG OF TEST> AT HOME
1 = I always speak <language of test> at home
2 = I almost always speak <language of test> at home
3 = I sometimes speak <language of test> and sometimes speak another language at home
4 = I never speak <language of test> at home
9 = Omitted or invalid

GEN\AMOUNT OF BOOKS IN YOUR HOME
1 = None or very few (0–10 books)
2 = Enough to fill one shelf (11–25 books)
3 = Enough to fill one bookcase (26–100 books)
4 = Enough to fill two bookcases (101–200 books)
5 = Enough to fill three or more bookcases (more than 200)
9 = Omitted or invalid

GEN\HOME POSSESS\COMPUTER TABLET
1 = Yes
2 = No
9 = Omitted or invalid

GEN\WERE YOUR <PARENTS/GUARDIAN A> BORN IN <COUNTRY>
1 = Yes
2 = No
3 = I don´t know
4 = Not applicable
9 = Omitted or invalid

GEN\ABOUT HOW OFTEN ABSENT FROM SCHOOL
1 = Once a week
2 = Once every two weeks
3 = Once a month
4 = Once every two month
5 = Never or almost never
9 = Omitted or invalid

GEN\HOW OFTEN\TIRED
1 = Every day
2 = Almost every day
3 = Sometimes
4 = Never
9 = Omitted or invalid

GEN\AGREE\BEING IN SCHOOL
1 = Agree a lot
2 = Agree a little
3 = Disagree a little
4 = Disagree a lot
9 = Omitted or invalid

GEN\HOW OFTEN\MADE FUN OF
1 = At least once a week
2 = Once or twice a month
3 = A few times a year
4 = Never
9 = Omitted or invalid

MAT\HOW OFTEN\WORK ON YOUR OWN
1 = Every or almost every lesson
2 = About half the lessons
3 = Some lessons
4 = Never
9 = Omitted or invalid

GEN\LIKE TEST ON COMPUTER TABLET
1 = I liked it a lot
2 = I liked it a little
3 = I didn't like it very much
4 = I didn't like it at all
9 = Omitted or invalid

GEN\USE COMPUTER TABLET\HOW OFTEN\SCHOOL ASSIGNMENT
1 = Every day or almost every day
2 = Once or twice a week
3 = Once or twice a month
4 = Never or almost never
9 = Omitted or invalid

Student Participation Status Indicator
0 = Student excluded and did not participate
1 = Student left school permanently
2 = Student absent
3 = Student participated
4 = Parental permission denied
5 = Student excluded, but data available
6 = Student removed from sample
7 = Booklet lost
9 = Omitted or invalid

Student Participation Achievement Session
0 = Student excluded and did not receive a booklet
1 = NA - left school permanently
2 = A - absent in session
3 = C - participated
4 = P - no parental permission
9 = Omitted or invalid

Sex of Students
1 = Female
2 = Male
9 = Omitted or invalid

Date of Student Birth\Month
99 = Omitted or invalid

Test Administrator Position
1 = National Center Staff
2 = Teacher from School
3 = Other
9 = Omitted or invalid

Special Accommodation\Achievement Session
0 = No Special Accommodation
1 = Special Accommodation
9 = Omitted or invalid

Student Exclusion Status
1 = Student with functional disabilities
2 = Student with intellectual disabilities
3 = Non-native language speaker
9 = Omitted or invalid

Reliability Coding Status
0 = Students Booklet not used for Reliability Scoring
1 = Students Booklet was used for Reliability Scoring
9 = Omitted or invalid

Conditioning Variable
9 = Omitted or invalid

ADMINISTRATION MODE/DATA SOURCE STUDENT TEST
1 = Paper
2 = Electronic
9 = Omitted or invalid

Locale ID of Student Achievement Test
1071 = Macedonian (Former Yugoslav Republic of Macedonia)
1132 = Sepedi (Sesotho sa Leboa) (South Africa)
3098 = Serbian (Cyrillic, Serbia and Montenegro)
7194 = Serbian (Cyrillic, Bosnia and Herzegovina)
51461 = Bosnian (Cyrillic) (Bosnia and Herzegovina)

IMPLICIT STRATUM CODE
999 = Omitted or invalid

INTERN. MATH BENCH REACHED WITH 1ST PV
1 = Below 400
2 = At or above 400 but below 475
3 = At or above 475 but below 550
4 = At or above 550 but below 625
5 = At or above 625
9 = Omitted or invalid

Students Sense of School Belonging/IDX
1 = High Sense of School Belonging
2 = Some Sense of School Belonging
3 = Little Sense of School Belonging
9 = Omitted or invalid

Student Bullying/IDX
1 = Never or Almost Never
2 = About Monthly
3 = About Weekly
9 = Omitted or invalid

Students Like Learning Mathematics/IDX
1 = Very Much Like Learning Mathematics
2 = Somewhat Like Learning Mathematics
3 = Do Not Like Learning Mathematics
9 = Omitted or invalid

Instructional Clarity in Science Lessons/IDX
1 = High Clarity of Instruction
2 = Moderate Clarity of Instruction
3 = Low Clarity of Instruction
9 = Omitted or invalid

Students Confident in Mathematics/IDX
1 = Very Confident in Mathematics
2 = Somewhat Confident in Mathematics
3 = Not Confident in Mathematics
9 = Omitted or invalid

Students Like Learning Science/IDX
1 = Very Much Like Learning Science
2 = Somewhat Like Learning Science
3 = Do Not Like Learning Science
9 = Omitted or invalid

Students Confident in Science/IDX
1 = Very Confident in Science
2 = Somewhat Confident in Science
3 = Not Confident in Science
9 = Omitted or invalid

Early Literacy Activities Before School/IDX
1 = Often
2 = Sometimes
3 = Never or almost never
9 = Omitted or invalid

Early Literacy Tasks Beginning School/IDX
1 = Very well
2 = Moderately well
3 = Not well
9 = Omitted or invalid

Parents Perceptions of Their Child School/IDX
1 = Very Satisfied
2 = Somewhat Satisfied
3 = Less than Satisfied
9 = Omitted or invalid

Home Resources for Learning/IDX
1 = Many Resources
2 = Some Resources
3 = Few Resources
9 = Omitted or invalid

Disorderly Behavior during Math Lessons/IDX
1 = Few or No Lessons
2 = Some Lessons
3 = Most Lessons
9 = Omitted or invalid

Number of Home Study Supports
0 = Neither Own Room nor Internet Connection
1 = Either Own Room or Internet Connection
2 = Both Own Room and Internet Connection
9 = Omitted or invalid

GEN\LVL OF EDUCATION\FATHER/GUARDIAN A
1 = Did not go to school
2 = Some primary school (Grades 1-8)
3 = Finished Grade 9
4 = Finished Grade 12
5 = Finished post-matric certificate
6 = Finished Diploma
7 = Finished first degree
8 = Finished Masters or Doctoral degree
9 = Not applicable
99 = Omitted

GEN\LVL OF EDUCATION\CHILD WILL GO
1 = Finish Grade 9
2 = Finish Grade 12
3 = Finish post-matric certificate
4 = Finish diploma
5 = Finish Bachelor's degree
6 = Finish postgraduate degree: Master's or Doctorate
9 = Omitted

GEN\WHAT KIND OF MAIN JOB\FATHER/GUARDIAN A
1 = Has never worked for pay
2 = Small Business Owner Includes owners of small businesses (fewer than 25 employees) such as retail shops, services, resta
3 = Clerical Worker Includes office clerks; secretaries; typists; data entry operators; customer service clerks
4 = Service or Sales Worker Includes travel attendants; restaurant service workers; personal care workers; protective servic
5 = Skilled Agricultural or Fishery Worker Includes farmers; forestry workers; fishery workers; hunters and trappers
6 = Craft or Trade Worker Includes builders, carpenters, plumbers, electricians, metal workers; machine mechanics; handicraf
7 = Plant or Machine Operator Includes plant and machine operators; assembly-line operators; motor-vehicle drivers
8 = General Laborers Includes domestic helpers and cleaners; building caretakers; messengers, porters, and doorkeepers; farm
9 = Corporate Manager or Senior Official Includes corporate managers such as managers of large companies (25 or more employe
10 = Professional Includes scientists; mathematicians; computer scientists; architects; engineers; life science and health pr
11 = Technician or Associate Professional Includes science, engineering, and computer associates and technicians; life scienc
12 = Informal
13 = Not applicable
99 = Omitted

GEN\DATE OF BIRTH\YEAR
1 = 2003
2 = 2004
3 = 2005
4 = 2006
5 = 2007
6 = 2008
7 = 2009
8 = 2010
9 = 2011
10 = 2012
11 = Other
99 = Omitted

GEN\TOTAL ENROLLMENT OF STUDENTS
99999 = Omitted or invalid

GEN\STUDENTS BACKGROUND\ECONOMIC DISADVA
1 = 0 to 10%
2 = 11 to 25%
3 = 26 to 50%
4 = More than 50%
9 = Omitted or invalid

GEN\PERCENT OF STUDENTS <LANG OF TEST>
1 = More than 90%
2 = 76 to 90%
3 = 51 to 75%
4 = 26 to 50%
5 = 25% or less
9 = Omitted or invalid

GEN\HOW MANY PEOPLE LIVE IN AREA
1 = More than 500,000 people
2 = 100,001 to 500,000 people
3 = 50,001 to 100,000 people
4 = 30,001 to 50,000 people
5 = 15,001 to 30,000 people
6 = 3,001 to 15,000 people
7 = 3,000 people or fewer
99 = Omitted or invalid

GEN\IMMEDIATE AREA OF SCH LOCATION
1 = Urban–Densely populated
2 = Suburban–On fringe or outskirts of urban area
3 = Medium size city or large town
4 = Small town or village
5 = Remote rural
9 = Omitted or invalid

GEN\INSTRUCTIONAL DAYS IN 1 CALENDER WEEK
1 = 6 days
2 = 5 1/2 days
3 = 5 days
4 = 4 1/2 days
5 = 4 days
6 = Other
9 = Omitted or invalid

GEN\BOOKS WITH DIFFERENT TITLES
1 = 2,000 books or fewer
2 = More than 2,000 books
6 = Logically not applicable
9 = Omitted or invalid

GEN\SHORTAGE\GEN\INSTRUCTIONAL MATERIAL
1 = Not at all
2 = A little
3 = Some
4 = A lot
9 = Omitted or invalid

GEN\SCH CHARACTER\TCH UNDERSTANDING
1 = Very high
2 = High
3 = Medium
4 = Low
5 = Very low
9 = Omitted or invalid

GEN\PRIMARY SCHOOL\RECOGNIZE LETTERS
1 = Less than 25%
2 = 25–50%
3 = 51–75%
4 = More than 75%
9 = Omitted or invalid

GEN\HIGHEST LEVEL OF FORMAL EDUCATION
1 = Did not complete <Bachelor’s or equivalent level—ISCED Level 6>
2 = <Bachelor’s or equivalent level—ISCED Level 6>
3 = <Master’s or equivalent level—ISCED Level 7>
4 = <Doctor or equivalent level—ISCED Level 8>
9 = Omitted or invalid

GEN\HIGHEST LEVEL OF FORMAL EDUCATION
1 = Did not complete a Bachelor’s degree
2 = Bachelor’s degree
3 = Honour’s degree
4 = Master’s degree
5 = Doctoral degree
9 = Omitted

School Participation Status Indicator
1 = Question not returned
2 = Question lost
3 = Question returned completed
6 = School removed from sample
9 = Omitted or invalid

ADMINISTRATION MODE/DATA SOURCE SCHOOL QUESTIONNAIRE
1 = Paper
2 = Online
9 = Omitted or invalid

Instruction Affected by Math Resource Shortage/IDX
1 = Not Affected
2 = Somewhat Affected
3 = Affected A Lot
9 = Omitted or invalid

School Emphasis on Academic Success-Principal/IDX
1 = Very High Emphasis
2 = High Emphasis
3 = Medium Emphasis
9 = Omitted or invalid

School Discipline-Principal/IDX
1 = Hardly Any Problems
2 = Minor Problems
3 = Moderate to Severe Problems
9 = Omitted or invalid

Students Enter with Litteracy and Numeracy Skills/IDX
1 = More than 75% Enter with Skills
2 = 25-75% Enter with Skills
3 = Less than 25% Enter with Skills
9 = Omitted or invalid

School Composition by Socioeconomic Background
1 = More Affluent
2 = Neither More Affluent nor More Disadvantaged
3 = More Disadvantaged
9 = Omitted or invalid

1 = Eastern Cape
2 = Free State
3 = Gauteng
4 = KwaZulu-Natal
5 = Limpopo
6 = Mpumalanga
7 = North West
8 = Northern Cape
9 = Western Cape

School type/Public and Independent
1 = Public
2 = Independent

Quintile status of schools
1 = Quintile 1
2 = Quintile 2
3 = Quintile 3
4 = Quintile 4
5 = Quintile 5
6 = Independent Schools

1 = No-fee
2 = Fee-paying