Adjudicated sub-region
School ID 5-digit
Student ID 5-digit
Country code 3-character
Country code ISO 3-digit
OECD country
Grade Q1
Study programme Q2
Month of birth Q3
Year of birth Q3
Gender Q4
Mother ISCO code Q5a
Mother <highest schooling> Q6
Mother <ISCED 5A or 6> Q7a
Mother <ISCED 5B> Q7b
Mother <ISCED 4> Q7c
Father ISCO Code Q8a
Father <highest schooling> Q9
Father <ISCED 5A or 6> Q10a
Father <ISCED 5B> Q10b
Father <ISCED 4> Q10c
Self born in country Q11a
Mother born in country Q11a
Father born in country Q11a
Country arrival age Q11b
Language at home Q12
Possessions desk Q13a
Possessions own room Q13b
Possessions study place Q13c
Possessions computer Q13d
Possessions software Q13e
Possessions Internet Q13f
Possessions calculator Q13g
Possessions literature Q13h
Possessions poetry Q13i
Possessions art Q13j
Possessions textbooks Q13k
Possessions dictionary Q13l
Possessions dishwasher Q13m
Possessions <DVD or VCR> Q13n
Possessions <country-specific item 1> Q13o
Possessions <country-specific item 2> Q13p
Possessions <country-specific item 3> Q13q
How many cell phones Q14a
How many televisions Q14b
How many computers Q14c
How many cars Q14d
How many books at home Q15
Sci enjoyment - Have fun Q16a
Sci enjoyment - Like reading Q16b
Sci enjoyment - Sci problems Q16c
Sci enjoyment - New knowledge Q16d
Sci enjoyment - Learning science Q16e
Sci tasks - Newspaper Q17a
Sci tasks - Earthquakes Q17b
Sci tasks - Antibiotics Q17c
Sci tasks - Garbage Q17d
Sci tasks - Species survival Q17e
Sci tasks - Food labels Q17f
Sci tasks - Life on Mars Q17g
Sci tasks - Acid rain Q17h
Sci value - Living conditions Q18a
Sci value - Natural world Q18b
Sci value - Relate to others Q18c
Sci value - Improve economy Q18d
Sci value - Use as adult Q18e
Sci value - Value to society Q18f
Sci value - Relevant to me Q18g
Sci value - Help understand Q18h
Sci value - Social benefits Q18i
Sci value - Opportunities Q18j
Sci activity - Science TV Q19a
Sci activity - Science books Q19b
Sci activity - Web content Q19c
Sci activity - Science radio Q19d
Sci activity - Science mags Q19e
Sci activity - Science club Q19f
Sci info - Photosynthesis - none Q20a
Sci info - Photosynthesis - school Q20a
Sci info - Photosynthesis - media Q20a
Sci info - Photosynthesis - friends Q20a
Sci info - Photosynthesis - family Q20a
Sci info - Photosynthesis - Internet or books Q20a
Sci info - Continents - none Q20b
Sci info - Continents - school Q20b
Sci info - Continents - media Q20b
Sci info - Continents - friends Q20b
Sci info - Continents - family Q20b
Sci info - Continents - Internet or books Q20b
Sci info - Genes - none Q20c
Sci info - Genes - school Q20c
Sci info - Genes - media Q20c
Sci info - Genes - friends Q20c
Sci info - Genes - family Q20c
Sci info - Genes - Internet or books Q20c
Sci info - Soundproofing - none Q20d
Sci info - Soundproofing - school Q20d
Sci info - Soundproofing - media Q20d
Sci info - Soundproofing - friends Q20d
Sci info - Soundproofing - family Q20d
Sci info - Soundproofing - Internet or books Q20d
Sci info - Climate change - none Q20e
Sci info - Climate change - school Q20e
Sci info - Climate change - media Q20e
Sci info - Climate change - friends Q20e
Sci info - Climate change - family Q20e
Sci info - Climate change - Internet or books Q20e
Sci info - Evolution - none Q20f
Sci info - Evolution - school Q20f
Sci info - Evolution - media Q20f
Sci info - Evolution - friends Q20f
Sci info - Evolution - family Q20f
Sci info - Evolution - Internet or books Q20f
Sci info - Nuclear energy - none Q20g
Sci info - Nuclear energy - school Q20g
Sci info - Nuclear energy - media Q20g
Sci info - Nuclear energy - friends Q20g
Sci info - Nuclear energy - family Q20g
Sci info - Nuclear energy - Internet or books Q20g
Sci info - Health - none Q20h
Sci info - Health - school Q20h
Sci info - Health - media Q20h
Sci info - Health - friends Q20h
Sci info - Health - family Q20h
Sci info - Health - Internet or books Q20h
Sci interest - Physics Q21a
Sci interest - Chemistry Q21b
Sci interest - Plant biology Q21c
Sci interest - Human biology Q21d
Sci interest - Astronomy Q21e
Sci interest - Geology Q21f
Sci interest - Experiments Q21g
Sci interest - Explanations Q21h
Envr aware - Greenhouse Q22a
Envr aware - Genetic modified Q22b
Envr aware - Acid rain Q22c
Envr aware - Nuclear waste Q22d
Envr aware - Forest clearing Q22e
Envr info - Air pollution - none Q23a
Envr info - Air pollution - school Q23a
Envr info - Air pollution - media Q23a
Envr info - Air pollution - friends Q23a
Envr info - Air pollution - family Q23a
Envr info - Air pollution - Internet or books Q23a
Envr info - Energy shortages - none Q23b
Envr info - Energy shortages - school Q23b
Envr info - Energy shortages - media Q23b
Envr info - Energy shortages - friends Q23b
Envr info - Energy shortages - family Q23b
Envr info - Energy shortages - Internet or books Q23b
Envr info - Extinction - none Q23c
Envr info - Extinction - school Q23c
Envr info - Extinction - media Q23c
Envr info - Extinction - friends Q23c
Envr info - Extinction - family Q23c
Envr info - Extinction - Internet or books Q23c
Envr info - Forest clearing - none Q23d
Envr info - Forest clearing - school Q23d
Envr info - Forest clearing - media Q23d
Envr info - Forest clearing - friends Q23d
Envr info - Forest clearing - family Q23d
Envr info - Forest clearing - Internet or books Q23d
Envr info - Water shortages - none Q23e
Envr info - Water shortages - school Q23e
Envr info - Water shortages - media Q23e
Envr info - Water shortages - friends Q23e
Envr info - Water shortages - family Q23e
Envr info - Water shortages - Internet or books Q23e
Envr info - Nuclear waste - none Q23f
Envr info - Nuclear waste - school Q23f
Envr info - Nuclear waste - media Q23f
Envr info - Nuclear waste - friends Q23f
Envr info - Nuclear waste - family Q23f
Envr info - Nuclear waste - Internet or books Q23f
Envr issues - Air pollution Q24a
Envr issues - Energy shortages Q24b
Envr issues - Extinction Q24c
Envr issues - Forest clearing Q24d
Envr issues - Water shortages Q24e
Envr issues - Nuclear waste Q24f
Envr improve - Air pollution Q25a
Envr improve - Energy shortages Q25b
Envr improve - Extinction Q25c
Envr improve - Forest clearing Q25d
Envr improve - Water shortages Q25e
Envr improve - Nuclear waste Q25f
Envr responsibility - Car emissions Q26a
Envr responsibility- Energy wasted Q26b
Envr responsibility- Factory emissions Q26c
Envr responsibility- Plastic pack Q26d
Envr responsibility- Dangerous waste Q26e
Envr responsibility- Endangered Q26f
Envr responsibility- Renewable electricity Q26g
Useful for Science career - School subjects Q27a
Useful for career - Science subjects Q27b
Useful for Science career - My subjects Q27c
Useful for Science career - Teaching Q27d
Science know - Job available Q28a
Science know - Find Where Q28b
Science know - Steps to take Q28c
Science know - Employers Q28d
Sci future - Like career Q29a
Sci future - After <secondary school> Q29b
Sci future - Advanced Q29c
Sci future - Work as adult Q29d
Self expected occupation at 30 ISCO code Q30
Regular lessons - Science Q31a
Out of school - Science Q31b
Self study - Science Q31c
Regular lessons - Mathematics Q31d
Out of school - Mathematics Q31e
Self study - Mathematics Q31f
Regular lessons - Language Q31g
Out of school - Language Q31h
Self study - Language Q31i
Regular lessons - Other Q31j
Out of school - Other Q31k
Self study - Other Q31l
Lessons - School 1-1 Q32a
Lessons - Not school 1-1 Q32b
Lessons - School small Q32c
Lessons - Not school small Q32d
Lessons - School large Q32e
Lessons - Not school large Q32f
Course - Comp Sci last yr Q33a
Course - Comp Sci this yr Q33a
Course - Opt Sci last yr Q33b
Course - Opt Sci this yr Q33b
Course - Comp Bio last yr Q33c
Course - Comp Bio this yr Q33c
Course - Opt Bio last yr Q33d
Course - Opt Bio this yr Q33d
Course - Comp Phy last yr Q33e
Course - Comp Phy this yr Q33e
Course - Opt Phy last yr Q33f
Course - Opt Phy this yr Q33f
Course - Comp Chem last yr Q33g
Course - Comp Chem this yr Q33g
Course - Opt Chem last yr Q33h
Course - Opt Chem this yr Q33h
Learning - Student ideas Q34a
Learning - Experiments Q34b
Learning - Design for lab Q34c
Learning - Apply everyday Q34d
Learning - Student opinion Q34e
Learning - Draw conclusions Q34f
Learning - Differnt phenomena Q34g
Learning - Own experiments Q34h
Learning - Class debate Q34i
Learning - Demonstrations Q34j
Learning - Choose own Q34k
Learning - World outside Q34l
Learning - Discussion Q34m
Learning - Follow instructions Q34n
Learning - Explain relevance Q34o
Learning - Test ideas Q34p
Learning - Society relevance Q34q
Sci future - Help later work Q35a
Sci future - Learn need later Q35b
Sci future - Useful to me Q35c
Sci future - Improve career Q35d
Sci future - Get a job Q35e
Self - Do well Science Q36a
Self - Do well Maths Q36b
Self - Do well Language Q36c
Learning - Advanced easy Q37a
Learning - Good answers Q37b
Learning - Topics quickly Q37c
Learning - Topics easy Q37d
Learning - Understand well Q37e
Learning - New ideas Q37f
Used computer IC1
How long used computers IC2
Use computer at home IC3a
Use computer at school IC3b
Use computer other places IC3c
Browse Internet IC4a
Play games IC4b
Write documents IC4c
Collaborate on Internet IC4d
Use spreadsheets IC4e
Download software IC4f
Graphics programs IC4g
Educational software IC4h
Download music IC4i
Write programs IC4j
E-mail or chat rooms IC4k
How well - Chat IC5a
How well - Virus IC5b
How well - Edit photos IC5c
How well - Database IC5d
How well - Copy data to CD IC5e
How well - Move files IC5f
How well - Search Internet IC5g
How well - Download files IC5h
How well - Attach e-mail IC5i
How well - Word processor IC5j
How well - Spreadsheet IC5k
How well - Presentation IC5l
How well - Download music IC5m
How well - Multi-media IC5n
How well - E-mails IC5o
How well - Web Page IC5p
Age of student
ISCED level
ISCED designation
ISCED orientation
Unique national study programme code
Occupational status Mother (SEI)
Occupational status Father (SEI)
Occupational status Self (SEI)
Highest parental occupational status (SEI)
Mother White collar/Blue collar classification
Father White collar/Blue collar classification
Highest parent White collar/Blue collar classification
Mother science-related career
Father science-related career
Either parent science-related career
Self science-related career at 30
Educational level of mother (ISCED)
Educational level of father (ISCED)
Highest educational level of parents (ISCED)
Highest parental education in years
Country of birth (Mother) 5-digit code
Country of birth (Father) 5-digit code
Country of birth (Self) 5-digit code
Immigration status
Language at home (3-digit)
Student information on science-related careers PISA 2006 (WLE)
School preparation for science-related careers PISA 2006 (WLE)
Cultural possessions at home PISA 2006 (WLE)
Awareness of environmental issues PISA 2006 (WLE)
Environmental optimism PISA 2006 (WLE)
Perception of environmental issues PISA 2006 (WLE)
General value of science PISA 2006 (WLE)
Home educational resources PISA 2006 (WLE)
Index of home possessions PISA 2006 (WLE)
Instrumental motivation in science PISA 2006 (WLE)
General interest in learning science PISA 2006 (WLE)
Enjoyment of science PISA 2006 (WLE)
Personal value of science PISA 2006 (WLE)
Responsibility for sustainable development PISA 2006 (WLE)
Science Teaching - Focus on applications or models PISA 2006 (WLE)
Science Teaching - Hands-on activities PISA 2006 (WLE)
Science activities PISA 2006 (WLE)
Science self-efficacy PISA 2006 (WLE)
Future-oriented science motivation PISA 2006 (WLE)
Science Teaching - Interaction PISA 2006 (WLE)
Science Teaching - Student investigations PISA 2006 (WLE)
Science self-concept PISA 2006 (WLE)
Family wealth PISA 2006 (WLE)
Self-confidence in ICT high level tasks PISA 2006 (WLE)
Self-confidence in ICT Internet tasks PISA 2006 (WLE)
ICT Internet/entertainment use PISA 2006 (WLE)
ICT program/software use PISA 2006 (WLE)
Index of economic, social and cultural status PISA 2006
Plausible value in math
Plausible value in reading
Plausible value in science
Plausible value in interest in science
Plausible value in support for scientific inquiry
Plausible value in explaining phenomena scientifically
Plausible value in identifying scientific issues
Plausible value in using scientific evidence
FINAL STUDENT WEIGHT
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FINAL STUDENT REPLICATE BRR-FAY WEIGHT62
FINAL STUDENT REPLICATE BRR-FAY WEIGHT63
FINAL STUDENT REPLICATE BRR-FAY WEIGHT64
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FINAL STUDENT REPLICATE BRR-FAY WEIGHT66
FINAL STUDENT REPLICATE BRR-FAY WEIGHT67
FINAL STUDENT REPLICATE BRR-FAY WEIGHT68
FINAL STUDENT REPLICATE BRR-FAY WEIGHT69
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Country weight factor for normalised weights (multi-level)
Adjudicated region weight factor for normalised weights (multi-level)
RANDOMIZED FINAL VARIANCE STRATUM (1-80)
FINAL VARIANCE UNIT (1,2,3)
Original stratum
Language of Test (3-char)
Effort A: real
Effort B: if counted
Effort B - Effort A
Deleted science item - Big and Small (Q02)
Deleted science item - The Cheetah (Q01)
Deleted science item - The Cheetah (Q02)
Version student database and date of release