1215
aframerican
boys
calls
caucasian
class
classroom
college
communications
concentration
desk
discussion
education
english
exam
exercises
females
german
girls
group
indoors
intelligence
learning
lecture
males
mathematician
multiethnic
occupation
people
positive
professor
rear
russian
school
schoolgirl
showing
sitting
smiling
spanish
student
studying
table
talking
teacher
teaching
teenagers
university
young