I don't see why it would be a bad idea, many kids seem to fail to learn to read well if the task of teaching it is left to the school. FWIW, I could read when

I don't see why it would be a bad idea, many kids seem to fail to learn to read well if the task of teaching it is left to the school. FWIW, I could read when I started school (at 6, in Austria [1]), as well as do simple maths; I was bored pretty much throughout my education, but at least I did well. Bored & lagging behind surely must be worse. [1] homeschooling is permitted here but it's extremely rare as far as I know.