What should I do about my brother?

Well this person is my brother and he is in a gang
He gets in troulble at school bad grades and everything
My mom grounds him but he does stuff to get him in more trouble like

Bringing his friends over when he is not surrpose to but he does
Anyway she...

was in the house &&once she had to jump out the window
He brung one dude over who my mom doesnt want over[bad influence]
Got drunk while my mom went out...

He leaves the house
All the time when he is not surrpose to

My mom or step dad ask me what he did while they were gone should I tell or

Just keep it a secret??

I NEED ADViCE!!

I guess I should have looked at your other questions before I answered the previous one, lol. Yes, do tell them what's going on. You're not doing him any favors by covering up for him. Parents also know that when you tell on a sibling, you're taking a chance and don't want to appear like a snitch. He doesn't have to know you blew the whistle. I'm sure they can figure out a way not to involve you once you've told them.

I don't know

what I would do is tell on him cause not tellin on him could get you in trouble trust me I would know...well sry bout your brother