Formal:
* Je déteste enseigner. (This is the most direct and literal translation.)
* Je n'aime pas du tout enseigner. (This means "I don't like teaching at all.")
Informal:
* J'ai horreur d'enseigner. (This conveys a stronger feeling of dislike, almost disgust.)
* J'en ai marre d'enseigner. (This means "I'm sick of teaching" and implies a sense of weariness.)
* Je trouve ça horrible d'enseigner. (This means "I find teaching horrible" and emphasizes the negative experience.)
Slangy:
* J'en peux plus d'enseigner! (This is very colloquial and means "I can't stand teaching anymore!")
The best translation for you will depend on the context and the level of formality you wish to convey.