Can anda get held-back at Hogwarts?

I think anda can if anda don't pass your OWL exams with a proper score. anda might have to go back and study some lebih and re-take the test before anda can pindah on to the selanjutnya year. Thats just my guess.

Yes, anda can be held back. There is an example. Marcus Flint was held back a year.