In need of icon suggestion for an interface [on hold]

I'm working on an android interface that would let users pick the category they fall under, either staff or student. It's a single screen that would display an icon (colored not black/white) of a staff and a student placed side by side with a label on top.

What i want from you is a suitable icon that i can use, one for staff and the other for student that would portray it well. If you can suggest a website where i can get good icons, i'd appreciate that too. Thanks