English question, please help?

Its sounds good. But if you want it a different way you could say "Students, please review what have learned today in class at home"

In the US, we would say "review" not "revise" and "learned" instead of "learnt."

Yes it is fine, because revise means to change the class work by further reviewing it.

Go over your assignment at home, and check your work. See if you have better answers. If you do revise your answers.