What to do if i heard somewhere that some students take adhd drugs to help them achieve better grades on exams. is this true?

Possible: That students use stimulants (that are frequently used for add) to avoid sleeping. Also, people who genuinely have add have studied better and more effectively after they take prescribed medicine for add. But I recommend that no one take stimulants unless prescribe for a real disorder.

Yes: studetns who do not have ADHD sometimes take Stimulants in an effort to improve their chance of getting high grades.