Assessment year | Number of participating students | Number of participating schools | Overall weighted response rate (percent) |
---|---|---|---|
2001 | 3,763 | 174 | 83 |
2006 | 5,190 | 183 | 82 |
2011 | 12,726 | 370 | 81 |
Year |
Education systems participating PIRLS at grade 4 |
---|---|
2001 | 36 |
2006 | 45 |
2011 | 53 |
Assessment year | 2000 | 2003 | 2006 | 2009 | 2012 | 2015 |
---|---|---|---|---|---|---|
Subjects assessed |
READING Mathematics Science |
Reading MATHEMATICS Science Problem solving |
Reading Mathematics SCIENCE |
READING Mathematics Science |
Reading MATHEMATICS Science Problem solving Financial literacy |
Reading Mathematics SCIENCE Collaborative problem solving Financial literacy |
Assessment year | Number of participating students | Number of participating schools | School response rate (percent) | Overall student response rate (percent) | |
---|---|---|---|---|---|
Original schools | With substitute schools | ||||
2000 | 3,700 | 145 | 56 | 70 | 85 |
2003 | 5,456 | 262 | 65 | 68 | 83 |
2006 | 5,611 | 166 | 69 | 79 | 91 |
2009 | 5,233 | 165 | 68 | 78 | 87 |
2012 | 6,111 | 161 | 67 | 77 | 89 |
Fourth-grade: all students enrolled in the grade that represents four years of formal schooling, counting from the first year of the International Standard Classification of Education (ISCED), Level 1, providing the mean age at the time of testing is at least 9.5 years.TIMSS guidelines call for a minimum of 150 schools to be sampled per grade, with a minimum of 4,000 students assessed per grade. The school response rate target is 85 percent for all countries. A minimum participation rate of 50 percent of schools from the original sample of schools is required for a country's data to be included in the international database. The response rate target for classrooms is 95 percent, and the target student response rate is set at 85 percent, from both original and substitute schools.
Eighth-grade: all students enrolled in the grade that represents eight years of formal schooling, counting from the first year of ISCED Level 1, providing the mean age at the time of testing is at least 13.5 years.
Twelfth-grade: All students in the final year of secondary schooling who are taking or have taken advanced mathematics or physics courses.
Assessment year | Number of participating schools | Number of participating students | Overall weighted response rate (percent) |
1995 | 182 | 7,296 | 80 |
2003 | 248 | 9,829 | 78 |
2007 | 257 | 7,896 | 84 |
2011 | 369 | 12,569 | 80 |
Assessment year | Number of participating schools | Number of participating students | Overall weighted response rate (percent) |
1995 | 183 | 7,087 | 78 |
1999 | 221 | 9,072 | 85 |
2003 | 232 | 8,912 | 73 |
2007 | 239 | 7,377 | 77 |
2011 | 501 | 10,477 | 81 |
Assessment year | Number of participating schools | Number of participating students | Overall weighted response rate (percent) |
1995 | |||
Advanced mathematics | 199 | 2,349 | 67 |
Physics | 203 | 2,678 | 68 |
Both assessments showed statistically significant increases in the mathematics performance of fourth- and eighth-grade students between these years.Science
In fourth grade, NAEP shows that there was an increase in students’ science performance overall between 1996 and 2005, whereas TIMSS did not detect any change in performance from 1995 to 2007. In eighth-grade, NAEP detected no measurable change between 1996 and 2005, but shows an increase in student’s science performance overall between 2009 and 2011. In contrast, TIMSS detected an increase between 1995 and 2003 and between 1995 and 2011, but detected no measurable change between 2003 and 2011 or between 2007 and 2011.