You vs exam upgrade scams vs easy-to-afford prep class

Would you rather cheat the system or attend prep class as one who has an exam approaching?

If you fail to plan you've planned to fail. Attending an effective prep class should help you feel strongly optimistic for your upcoming exams and point you in the right direction. Avoid people or entities claiming to help you but are misleading, usually false and architects of misfortune. They will tell you not to study or forget about studying hard.