How do you say in french what classes have?

There are a few ways to say "what classes have" in French, depending on the context:

For a specific person:

* Quels cours a-t-il/elle ? (formal) - What classes does he/she have?

* Quels cours a-t-il/elle (informal)? - What classes does he/she have?

* Quels cours prend-il/elle ? (formal) - What classes does he/she take?

* Quels cours prend-il/elle (informal)? - What classes does he/she take?

For a school or program:

* Quels cours propose-t-il/elle ? (formal) - What classes does it offer?

* Quels cours propose-t-il/elle (informal)? - What classes does it offer?

* Quels cours sont disponibles ? (formal) - What classes are available?

* Quels cours y a-t-il ? (informal) - What classes are there?

For a specific subject:

* Quels cours de ... y a-t-il ? (informal) - What ... classes are there?

* Quels cours de ... sont disponibles ? (formal) - What ... classes are available?

* Quels cours de ... propose-t-il/elle ? (formal) - What ... classes does it offer?

For example:

* Quels cours d'histoire y a-t-il ? - What history classes are there?

* Quels cours de mathématiques propose-t-il ? - What math classes does it offer?

Remember to adjust the formality of your language depending on who you are talking to.