Thirty-six countries participated in TIMSS 2015 at the Grade 8 level and three countries at the Grade 9 level (Norway, Botswana and South Africa). We will describe the achievement scores using three measures, namely (i) average mathematics and science scale scores in TIMSS 2015 for participating countries; (ii) change in mathematics and science achievement scores for countries which participated in TIMSS 2003 and TIMSS 2015 and (iii) the TIMSS benchmarks to present the mathematics and science achievement profile of selected countries.