What would be best?

[Tank]

NONONONONO! Never cheat.

Remember if you cheat, the only person is yourself.

:/

Depends how you look at it. There's a difference between cheating with knowledge that the same information will appear again in life, and basic common sense. If his teacher gives him tons of work for no apparent reason, I say cheat. There is a line in Literature and English where, if it is pushed enough towards a student, will make them close up entirely. If he has a lot of work, go for it, cheat, just don't get caught. Whatever you have to do to get it done.