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<p>The 12th grade TIMSS questions tested 7th grade topics.</p>
<p>“…the TIMSS general tests for secondary school seniors are essentially literacy tests, not examinations on advanced knowledge. The mathematics topics were similar to topics covered by the seventh grade in most countries, and the science topics generally were covered by the ninth grade. High school seniors all should have been exposed to the material.”</p>
<p>From the paragraph starting with …Several other factors.
[Global</a> Perspectives for Local Action: Using TIMSS to Improve U.S. Mathematics and Science Education](<a href=“http://books.nap.edu/openbook.php?record_id=9605&page=83]Global”>6 Frequently Asked Questions About TIMSS | Global Perspectives for Local Action: Using TIMSS to Improve U.S. Mathematics and Science Education | The National Academies Press)</p>