Επιλεκτική εστίαση δυσαρεστημένη μαθήτρια με προστατευτική μάσκα που δείχνει τον αντίχειρα προς τα κάτω, και ο δάσκαλος στέκεται κοντά στο chalkboard με βιβλίο - Φωτογραφίες & Εικόνες Αρχείου

Selective focus of schoolgirl in protective mask showing thumb up, and teacher standing near chalkboard with back to school lettering

Selective focus of bored schoolgirl in protective mask looking at camera, and teacher standing near chalkboard with back to school lettering

Selective focus of schoolgirl in medical mask writing in notebook, and teacher standing near chalkboard with book

Teacher with mask in the classroom. Social distanting and classroom safety during coronavirus epidemic

Teacher with mask teaching how to wear mask at school. Social distanting and classroom safety during coronavirus epidemic

A multi-racial female teacher with a facemask explaining a lesson in front of the blackboard with "Welcome back to school" written on it

Smiling student girl wearing school backpack, mask and holding exercise book. Social distanting and classroom safety during coronavirus epidemic

African american teacher in medical mask gesturing during lesson in classroom

African american teacher in medical mask standing near asian girl writing in notebook

African american teacher in medical mask near asian girl writing in notebook

Schoolgirl in medical mask writing in notebook near classmate on blurred background

Redhead girl in medical mask writing in notebook near blurred african american teacher

Schoolgirl in medical mask reading book in classroom

Schoolgirl in medical mask reading book near devices in classroom

Schoolgirl in medical mask pointing with hand near blurred schoolboy during lesson, banner

African american woman pointing with hand near whiteboard and blurred schoolkids