What are some of the reasons Leo Borlock has as to why Stargirl has become so popular?

Early on
in the narrative, Leo is able to identify whyhas captured the imagination of the students at
Mica Area High School.  Part of the reason has to do with the school's social setting
itself:

We all wore the same clothes, talked the same
way, ate the same food, listened to the same music. Even our dorks and nerds had an MAHS stamp
on them. If we happened to somehow distinguish ourselves, we quickly snapped back
into...