Mature black man attending educational seminar in lecture hall and looking at camera.
Happy female friends using mobile phone while studying in 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.
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
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
high angle view of lecturer looking at multiethnic audience during seminar in conference 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.
Male professor sitting on desk edge in empty tiered lecture hall, with wooden benches
Happy black females student during a class in lecture hall looking at camera.
Black professor giving exam papers to group of adult students in lecture hall.
selective focus of african american lecturer talking to audience during seminar in conference hall
It all comes down to the test...Two male students writing exam in a lecture hall.
female business speaker with notepad standing at white board during lecture in conference hall
Female student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
african american lecturer talking to audience during seminar in conference hall, participant raising
Male student wearing face protective medical mask for virus protection at lecture hall
