Is it normal to stay up to 4am on a school night?

Yes, but sooner or later it'll catch with you.

yess its normal..but whenever ur tired, go to bed immediatley, cuz the tiredness witll catch up to you. if ur never tired,,go to bed anyways, cuz you wont be good for school.

I do that so i can talk to friends for a while...but grades catch up with you! You have less patience to study

Dude, just go to sleep

Yeah its normal. I don't stay up 'till 4 though(well maybe every once in a blue moon). For me I always stay up until 2:30am. I don't ever really go to bed before 11:30 and when I do I am actually more tired than I am going to bed later.

It's probably not good but I've done this for soo long and nothing really happens...

(Oh wait, I fall asleep in class):)

Thanks peeps, gonna take that into account

Yep, it will catch you on later. A lack of sleep will always give its consequences

Do that for a month and see the results after.

Yep then you will have blood in your snot.