Students should go to www.powertyping.com , choose qwerty and practise for 20 minutes every evening that they can for the rest of the school year. As they get better, challenge them with a higher WPM count.
For the immediate future, students should start memorizing where the keys are on a keyboard as they will eventually be filling in a blank keyboard page for a grade. They will do this numerous times until the teacher is satisfied that they know which keys are which, without looking. The blank keyboard test will be graded. Blank practise pages can be found by googling "blank keyboard worksheet"