PNG ICO ICNS MORE
Avatars & smileys
3D
Free Large Boss Icon Set
Library, education, librarian
Black
512x512
Education & science
Pretty Office 10
male, student, Graduate
Computer & hardware
Free Google Glass Icon Set
googleglass, White, google
1024x1024
Business & finance
Sunny Day
hat, graduation, diploma
400x400
Impressions
learner, school, university
Real Vista 2
Man, user, Graduated
Shopping & e-commerce
Sophistique
student, Girl
Boxes
Classroom, teacher, Language
128x128