The Trends in International Mathematics and Science Study (TIMSS) provides reliable and timely data on the mathematics and science achievement of U.S. 4th- and 8th-grade students compared to that of students in other countries. TIMSS data have been collected in 1995, 1999, 2003, 2007, and 2011. The next data collection is in 2015.
This is not a two cent NGO, the results are acknowledged worldwide, unless you are in denial. Their website if you want to refer http://nces.ed.gov/timss/
Here is the result for 2011, well, part of it anyhow
Here is the full reference in the website http://nces.ed.gov/timss/table11_3.asp
The average score is 500, with Malaysia scoring 440.
What about this PISA? No, it's not the leaning tower that we are talking about
The Programme for International Student Assessment (PISA) is a triennial international survey which aims to evaluate education systems worldwide by testing the skills and knowledge of 15-year-old students. To date, students representing more than 70 economies have participated in the assessment.
Their website http://www.oecd.org/pisa/
And the result for 2012
For the full result http://www.oecd.org/pisa/keyfindings/PISA-2012-results-snapshot-Volume-I-ENG.pdf
If you look carefully, you will see that Thailand has a higher score than Malaysia.
Time to wake up..