advice
announcement
attention
black
class
classroom
clip art
conference
confirmation
course
cram school
education
elementary school
explanation
flat
frame
guide
high school
human
illustration
information
instruction
instruction stick
isolated
junior high school
learning
lecture
lecturer
lesson
man
one point
person
pictogram
presentation
professor
seminar
silhouette
simple
stick figure
stick man
study
teach
teacher
university