By standardized, I mean each student is taking the same test at the same time. Differentiation of the test is not allowed (unless you have a very complex 504/IEP or in my state, a 1st language waiver).
Regardless of the test, if a teacher were to commit to raising their entire class above proficient, they will not be able to do it with homework. If you have a group of students that is scoring at basic or below and aren't on the cusp of breaking up to proficient, you also likely have a group of parents that are unable to help with the math at home. Those students need more time at school, more hands on math, a differentiated program and small group time to master basic concepts they likely didn't catch the first time around a few years ago.
Two years ago, I had a group of 120 6th graders enter my school with 36 of them testing at 3rd grade math. Many couldn't multiply two digit numbers. It took two years of intensive math instruction, summer school and tutoring and we were still only able to get 20 of those kids up to grade level math (prepared to take Algebra in 8th).
