Vista trasera de los estudiantes que escuchan la conferencia de profesores en la universidad - Foto e imagen de stock

Rear view of young students sitting in classroom during lesson

Rear view of young students listening to teachers lecture at college

Rear view of multiethnic students listening to teachers lecture at college

Pupils raising hands on lesson to answer teacher question

Rear view of schoolchildren and teacher writing on white board

Rear view of african american boy with arm up in classroom with teacher and classmates

Rear view of schoolgirl writing on chalk board and classmates with teacher sitting in classroom

Side view of schoolchildren sitting in row and teacher at table with laptop in classroom during lesson

Rear view of high school students with arms up and african american teacher in classroom

Rear view schoolchildren and teacher resting with raising arms

Schoolchildren standing around teacher at classroom with desks on foreground

Rear view of schoolgirl with arm up with classmates and teacher in classroom

Rear view of pupils looking at teacher while she writing on chalkboard

Rear view of multiethnic high school teenage students and african american teacher with wide arms

High school students raising hands to answer teachers question