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Lasting relationships research data archive

Science achievement in the middle school years

Mathematics achievement in the middle school years

Quality assurance in data collection

Mathematics achievement in the primary school years

Science achievement in the primary school years

Technical report

Mathematics and science achievement in the final year of secondary school

School contexts for learning and instruction

TIMSS 1999 technical report

Profiles of student achievement in mathematics at the TIMSS international benchmarks

TIMSS 1999