When I moved to the U.S. in 2003, my son was 14, and he went to midschool. So that you don't worry about Russia - I had to do it every night, so poor level of teaching there. The textbooks, yes - the beauty, on the look paper, with pictures, everything is explained by slanges as for fools (blink, and they are there), but what is given there - mother does not burn, so it was not just to teach, but to re-teach.
So do not worry. This is a global problem, not just Russian.

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and Ura. The problem of education has been solved. Not only for us, it was easier now.