My school is not the BEST, it isn't a high rank school at all - not even CLOSE!
BUT I don't regret attending the school I went to although academically many would say I'm stupid for saying this. My teachers are just AMAZING, I don't know how they do it everyday putting up with the little annoying flipping crazy, nuts, hyper ,attention seeking juniors. They have been so supportive throughout the high school years and I can absolutely say they understood each and everyone of us ( Yes we were a small grade). I love my maths teacher as if he is my second dad - that should explain a bit. Oh yeah BUT we had a pretty errrmmm.... not so great career adviser who told us about early entries, scholarships etc. when they were too late >_<" so pretty much my grade missed out on early entry to any university. She doesn't have much hope in us one bit.
My grade, we have been told we are one hell of a close grade. Everyone knew each other and we always exchange friendly gestures even though we weren't close friends, we'll strike up a conversation with each other whenever there is a chance.
Academically I do regret attending my school due to the environment, it wasn't exactly a studying area and most work were done at home. Even during exams there will always be a blast of sound, people screaming to one other, children jumping on chairs, swearing at the teacher etc. And a few people in my grade attended school just to get their parents off their backs because they weren't sure what they wanted to do so unfortunately they didn't care what marks they get etc.
Overall, I don't regret it due to the support of teachers and my grade - if I turned back time I would still attend my school despite the low ranking and not-so-great career adviser.