I don't mind summer school, I've taken it for the last 2 years and I'm still in it this year, in fact I have to go to it in an hour.
it isn't hell, though, just don't feel like getting up every morning even though it's not even that long.
I used to think summer school was a full 7 hours of school throughout June and July, but turns out it's only 2 hours, 3 days a week, and only throughout June.
I really don't think you should ditch it, it's honestly not that bad.