[Alberta's Child]

What you’ve described may be grounds for a civil lawsuit, but it is not a crime.

If you cheat in school you are subject to disciplinary action by the school. They don’t call the police and have you charged with a crime.

[Codeflier]

In many states it is illegal to participate in activities where someone impersonates someone else via signature or other means of intentional deception. It really comes down to the state, but I think it does qualify as a crime in many areas.