Sonriente bibliotecario sosteniendo taza y mirando a los escolares en la biblioteca - Foto e imágenes de stock

Adorable happy schoolchildren reading books in library

Young female librarian holding cup and looking at smiling schoolkids in library

Happy pupils looking at teacher on blurred foreground during lesson

Young employee consulting with chief in the office, blonde girl holding folder in hands and helping her colleagues

Emotional leader showing to somebody, aguing him for lateness, close up photo.

Cute smiling schoolkids studying with desktop computers in library

Serious team thinking about the futer of business, close up photo, thoughtful office workers concentrated on conversation

Positive schoolgirl looking at blurred friend

Happy young students chatting at classroom of college

Handsome young teacher making presentation for group of students at university

Focused young students sitting in classroom during lesson

Girl with braces sitting with laptop and looking at camera

Top view of teacher and pupils doing homework together

Young students talking about homework together in college corridor

Group of multiethnic students working together in classroom

Cropped image of african american taking high five to multicultural high school teenage students