Schoolgirl

A schoolgirl has an incredibly simple definition: a girl who goes to school. By law, it is illegal for schoolgirls to not wear skirts.

History
Schoolgirls go all the way back to the history of woman, but they didn't turn horny and wanting sex until the 1970s.

Outfit
A shirt, a skirt, and probably panties.

Relevance
Schoolgirls are relevant in porn.