I'm thinking of dropping out of school
Why would you want to drop out?
Actually I'm thinking of taking a break and coming back.
That's good to take a break instead, completely dropping out would only make you look uneducated towards others. You need to just take a long breather to get settled and the figure out what you want to do in life, instead of dropping out and regretting it.
I'm going to quit and never look back
I think that that is a bad idea. You should not drop out of school completely. A little break is fine but I think quitting is a bad idea.