Black female student with protective face mask writing notes at lecture hall.
Mature black man attending educational seminar in lecture hall and looking at camera.
College classmates cooperating while e-learning during a class at lecture hall.
female college students with face masks analyzing their exam results in lecture hall.
Happy female friends using mobile phone while studying in lecture hall.
Male student taking notes while learning during a class at lecture hall.
Mature student and his classmate talking to their professor after a class at lecture hall.
cropped image of lecturer standing and gesturing at podium tribune during seminar in conference hall
Happy black professor and his adult students in lecture hall looking at camera.
African American student feeling bored while attending class at lecture hall.
Happy black student learning during a class in lecture hall and looking at camera.
Black teacher examining assignments of adult students during a class in lecture hall.
smiling caucasian lecturer talking to african american listener during seminar in conference hall
Pensive university student looking through the window while learning in lecture hall.
Smiling black senior man attending a class in lecture hall and looking at camera.
Rear view of adult students attending education training class in lecture hall.
cropped image of smiling lecturer standing at podium tribune during seminar in conference hall
Mature professor and his students using laptop during a class at lecture hall.
African American student writing notes while attending class in lecture hall.
Happy student taking notes during a class at lecture hall and looking at camera.
Happy female college student during a class in lecture hall looking at camera.
Happy mature man on education training class in lecture hall looking at camera
Back view of group of students raising their arms during a class at lecture hall.
high angle view of lecturer looking at multiethnic audience during seminar in conference hall,
Mid adult student using laptop during computer class at lecture hall.
Teacher with protective face masks talking to a group of university students in lecture hall.
Happy mature woman on education training class in lecture hall looking at camera.
smiling african american lecturer talking to audience during seminar in conference hall and pointing
College student raising her arm to answer teacher's question in lecture hall,
Exhausted university student fell asleep while preparing for an exam in lecture hall.
