11.   States can decide which subjects to write standards for, but they must have reading and math standards to comply with the law.

n. + standard >>共 870
safety 13.26%
industry 4.60%
quality 3.94%
labor 3.67%
fuel 2.34%
health 2.34%
performance 2.22%
air 2.09%
emission 1.92%
world 1.77%
math 0.23%
math + n. >>共 159
teacher 13.21%
class 8.67%
problem 8.67%
skill 5.99%
test 5.78%
professor 5.26%
score 5.16%
course 2.37%
student 1.96%
whiz 1.86%
standard 1.14%
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