> Unfortunately most teachers teach at the level of the more advanced students, not at the level of the slower students. I don't know if they mean to do this, i

> Unfortunately most teachers teach at the level of the more advanced students, not at the level of the slower students. I don't know if they mean to do this, it might be unconscious, but they definitely do it. This is almost universally false. They target the least advanced students and let them more advanced students fend for themselves. In the US it's even more pronounced because of teacher evaluation by test scores, etc. Teachers are incentivized to ignore the smarter kids because their test scores are high already, and they get more bang for their buck by raising the scores of the kids at the bottom of the range.