Well done! Focus and result - aligned!
PISA 2012 Results http://www.oecd.org/pisa/keyfindings/pisa-2012-results.htm
Another question for math lover. Bar model please If 6 boys fill 6 notebooks in 6 weeks and 4 girls fill 4 notebooks in 4 weeks, how many notebooks will a class of 12 boys and 12 girls fill in 12 weeks?