|TIMSS: Trends in Mathematics and Science Achievement Around the World
TIMSS 1999 is the second assessment in the series of IEA studies to measuretrends in students' mathematics and science achievement. TIMSS 1999 wasconducted by the International Study Center at Boston College and included38 countries. the 1999 assessment measured the mathematics and scienceachievemente of eighth-grade student (ages 13 and 14 years) and collected extensive information from students, teachers, and school principals about mathematics and science curricula, instruction, home contexts, and school
characteristics and policies. Of the 38 participating countries, 26 also participated in the 1995 TIMSS assessment, which enabled these countries to measure trends in their children's mathematics and science achievement and in schools and home contexts for learning. The next TIMSS assessment will be conducted in 2003.