It really depends on the school. My school has a lot of good teachers but you will have that one class that you hate. Almost all my teachers do their job correctly. I don’t think that you should have to be worried about how nice or well knowledgeable the teachers are

Someones do
But expect to have some of these types of teachers:
The one who doesn't know how to explain
The one that has to write the lesson with every fucking single detail
The one that sucks at writing
The one who will give u a speach cuz u must be more like ur gender
The homophobic
The one that argues with u cuz you asked for the time
The one that will never let u go to the toilet untill the time ends
The one that sucks IN EVERYTHING
The only one that is actually good