active
adult
answer
arm
ask
back to school
black
boys
caucasian
chalkboard
child
childhood
children
class
classroom
desk
education
elementary
girls
group
hand
indoors
kids
knowledge
learn
learning
lesson
mixedrace
people
person
primary
pupil
question
raised
raising hand
school
schoolchild
schoolgirl
sitting
student
study
teacher
teaching
up
vote
young
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