For courses in/on law

For courses in/on law
 

If I am asking a law student/major, is it natural English to say?:

-For courses in/on law, is attendance required?

(Are the meaning of the sentence and the preposition both used correctly?)

'For law courses' sounds very natural to me.
'For courses in law' is used.
'For courses on law' doesn't sound right.

Thank you~

But a long time ago my teacher, a non-native speaker, said 'a course on the development of capitalism ' was OK; does this sound OK?

Yes, it sounds correct.

Thank you~

Are they both correct?:

-Are you taking one literature course/course on literature/course in literature this term?

All three choices can be used.

Thank you~