Crips attending a STEM academy. Now I've heard it all.
Anyway, this looks like a gang initiation. Same thing happened with my brother.
Why do you keep saying or labeling them as Crips

This could have been some type of "right of passage" non-gang related initiation; where they violate other kids for whatever reason.
Not saying it's right or justified- hell no, it's wrong as fuk for these little kids to be so violent and hostile with each other. But where are you getting Crip affiliation from??
The specialty designation doesn't automatically mean that the school is "elite". There's an "Intl. Baccalaureate" school around my way - it's the lowest ranking school within the boundaries with low standardized testing scores. That just means the curriculum is more specialized, advanced or concentrated- a school is a school with kids learning and developing regardless of the title assigned to the program.