Does 'elever' not work here?
Generally, you're an "elev" in primary, secondary, and high school*, and a "student" in higher education.
* Barneskolen, ungdomsskolen og videregående
Kjempemange or særs mange, but not mange?
Because "very" needs to be translated.
saying "very many" is incorrect, even in english. This is coming from my mother who taught english for a living
colloquial english accepts very many