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    High school teacher calling on students with hands raised in classroom — Stock Photo
    High school teacher calling on students with hands raised in classroom
    Junior high school students with hands raised during lesson in classroom — Stock Photo
    Junior high school students with hands raised during lesson in classroom
    Side view of a Caucasian male field hockey coach interacting with a multi-ethnic group of female field hockey players, sitting in a changing room, showing them a game plan — Stock Photo
    Side view of a Caucasian male field hockey coach interacting with a multi-ethnic group of female field hockey players, sitting in a changing room, showing them a game plan
    Side view mid section of boy and girl high school student sitting on chairs in an empty school theatre preparing before a performance, holding scripts and rehearsing together — Stock Photo
    Side view mid section of boy and girl high school student sitting on chairs in an empty school theatre preparing before a performance, holding scripts and rehearsing together
    Students studying in the classroom at school — Stock Photo
    Students studying in the classroom at school
    Front view of a multi-ethnic group of teenage male and female school pupils with schoolbags hanging out, walking and talking in their high school grounds — Stock Photo
    Front view of a multi-ethnic group of teenage male and female school pupils with schoolbags hanging out, walking and talking in their high school grounds
    Female teacher and junior high school girl students at desk in classroom — Stock Photo
    Female teacher and junior high school girl students at desk in classroom
    Coloured X-ray of the chest of a 52 year old female patient with metastatic (secondary) lung cancer (yellow). — Stock Photo
    Coloured X-ray of the chest of a 52 year old female patient with metastatic (secondary) lung cancer (yellow).
    Female college student holding equipment while practicing experiment in laboratory — Stock Photo
    Female college student holding equipment while practicing experiment in laboratory
    Male student showing tablet computer to friend while standing in lab — Stock Photo
    Male student showing tablet computer to friend while standing in lab
    Front view of a Caucasian teenage girl and boy embracing and smiling while the boy takes a selfie of them with a smartphone in their school grounds, another teenage couple sitting in the background — Stock Photo
    Front view of a Caucasian teenage girl and boy embracing and smiling while the boy takes a selfie of them with a smartphone in their school grounds, another teenage couple sitting in the background
    Junior high school boys using digital tablet in classroom — Stock Photo
    Junior high school boys using digital tablet in classroom
    Junior high students leaving school building, descending steps — Stock Photo
    Junior high students leaving school building, descending steps
    Portrait of female student with arms crossed standing in lab — Stock Photo
    Portrait of female student with arms crossed standing in lab
    Portrait from above confident junior high boy student using computer in computer lab — Stock Photo
    Portrait from above confident junior high boy student using computer in computer lab
    Side view of multi-ethnic group of teenage boys and girls holding scripts and performing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view of multi-ethnic group of teenage boys and girls holding scripts and performing on the stage of a school theatre during rehearsals for a performance
    Male teacher and boy student using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher and boy student using microscope, conducting scientific experiment in laboratory classroom
    Teenage female college student using digital tablet in desk in classroom — Stock Photo
    Teenage female college student using digital tablet in desk in classroom
    Portrait smiling teenage girls designing denim jacket in fashion design class — Stock Photo
    Portrait smiling teenage girls designing denim jacket in fashion design class
    Eager girl students raising arms behind microscopes in laboratory classroom — Stock Photo
    Eager girl students raising arms behind microscopes in laboratory classroom
    Front view of a group of female Caucasian field hockey players and their Caucasian male coach training before a game, standing on a hockey pitch, resting, on a sunny day — Stock Photo
    Front view of a group of female Caucasian field hockey players and their Caucasian male coach training before a game, standing on a hockey pitch, resting, on a sunny day
    Schoolboy explaining about world map in classroom at school — Stock Photo
    Schoolboy explaining about world map in classroom at school
    Teenage girl showing tablet computer to friend while standing in library — Stock Photo
    Teenage girl showing tablet computer to friend while standing in library
    Side view of a Caucasian female field hockey player preparing before a game, sitting in a changing room, holding a hockey helmet — Stock Photo
    Side view of a Caucasian female field hockey player preparing before a game, sitting in a changing room, holding a hockey helmet
    Tween boys playing basketball on schoolyard — Stock Photo
    Tween boys playing basketball on schoolyard
    Curious, smiling girl students listening in classroom — Stock Photo
    Curious, smiling girl students listening in classroom
    Portrait close up of a Caucasian male field hockey goalkeeper, wearing black hockey uniform and a helmet, standing on the pitch and looking to camera, with his teammates in the background on a sunny day — Stock Photo
    Portrait close up of a Caucasian male field hockey goalkeeper, wearing black hockey uniform and a helmet, standing on the pitch and looking to camera, with his teammates in the background on a sunny day
    Teacher helping junior high students using computer in computer lab — Stock Photo
    Teacher helping junior high students using computer in computer lab
    Junior high girl students walking in library — Stock Photo
    Junior high girl students walking in library
    Portrait of confident teachers standing outside school building steps — Stock Photo
    Portrait of confident teachers standing outside school building steps
    Students writing their GCSE exam in classroom — Stock Photo
    Students writing their GCSE exam in classroom
    Front view of a group of female Caucasian field hockey players preparing before a game, kneeling in front of their Caucasian male coach, on a hockey pitch, who gives them game plan, on a sunny day — Stock Photo
    Front view of a group of female Caucasian field hockey players preparing before a game, kneeling in front of their Caucasian male coach, on a hockey pitch, who gives them game plan, on a sunny day
    Male student reading record while practicing chemistry experiment in lab — Stock Photo
    Male student reading record while practicing chemistry experiment in lab
    College students practicing chemistry experiment at desk in lab — Stock Photo
    College students practicing chemistry experiment at desk in lab
    Junior high school girl student with hand raised in classroom — Stock Photo
    Junior high school girl student with hand raised in classroom
    High school boy students talking in classroom — Stock Photo
    High school boy students talking in classroom
    High school students with hands raised, asking questions during lesson in classroom — Stock Photo
    High school students with hands raised, asking questions during lesson in classroom
    Close-up of teenage girl using microscope in lab — Stock Photo
    Close-up of teenage girl using microscope in lab
    Curious girl examining molecule model in classroom — Stock Photo
    Curious girl examining molecule model in classroom
    Portrait confident junior high female students on steps — Stock Photo
    Portrait confident junior high female students on steps
    Side view of a mixed race teenage boy and African American teenage girl high school student sitting on chairs in an empty school theatre preparing before a performance, holding scripts and rehearsing together — Stock Photo
    Side view of a mixed race teenage boy and African American teenage girl high school student sitting on chairs in an empty school theatre preparing before a performance, holding scripts and rehearsing together
    Front view close up of a Caucasian teenage boy sitting at a desk in a school classroom writing in a notebook, with a classmate sitting at a desk in the background — Stock Photo
    Front view close up of a Caucasian teenage boy sitting at a desk in a school classroom writing in a notebook, with a classmate sitting at a desk in the background
    High angle view of college students studying at desk in classroom — Stock Photo
    High angle view of college students studying at desk in classroom
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria. — Stock Photo
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria.
    Empty seats and stage in a school theatre from the back of the auditorium in a high school with the lights off — Stock Photo
    Empty seats and stage in a school theatre from the back of the auditorium in a high school with the lights off
    Sri Lanka. Mirissa, planting cinnamon. Cinnamon is the inner bark of the cinnamon tree. Artisanal preparation of cinnamon stick. — Stock Photo
    Sri Lanka. Mirissa, planting cinnamon. Cinnamon is the inner bark of the cinnamon tree. Artisanal preparation of cinnamon stick.
    Portrait smiling, confident female teacher wearing hijab in classroom — Stock Photo
    Portrait smiling, confident female teacher wearing hijab in classroom
    Teacher and student sitting together with laptop and tablet — Stock Photo
    Teacher and student sitting together with laptop and tablet
    Teenage girl holding pipette while practicing chemistry experiment at desk in lab — Stock Photo
    Teenage girl holding pipette while practicing chemistry experiment at desk in lab
    Side view close up of a Caucasian teenage girl sitting in front of a window playing a flute, selective focus — Stock Photo
    Side view close up of a Caucasian teenage girl sitting in front of a window playing a flute, selective focus
    Overhead view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and using a laptop computer — Stock Photo
    Overhead view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and using a laptop computer
    Junior high students using computers in computer lab — Stock Photo
    Junior high students using computers in computer lab
    Young female using tablet computer while studying at desk with classmates at desk in classroom — Stock Photo
    Young female using tablet computer while studying at desk with classmates at desk in classroom
    Front view of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and using laptop computer, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Front view of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and using laptop computer, with teenage male and female classmates sitting at desks working in the background
    Side view mid section of a mixed race teenage schoolgirl sitting at a desk in class using a laptop computer — Stock Photo
    Side view mid section of a mixed race teenage schoolgirl sitting at a desk in class using a laptop computer
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria. — Stock Photo
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria.
    High angle front view of a teenage mixed race male field hockey player, lying down on a field hokey pitch, resting, focusing before a game on a sunny day — Stock Photo
    High angle front view of a teenage mixed race male field hockey player, lying down on a field hokey pitch, resting, focusing before a game on a sunny day
    Boy playing table tennis — Stock Photo
    Boy playing table tennis
    Portrait confident junior high school students in classroom — Stock Photo
    Portrait confident junior high school students in classroom
    Front view of a multi-ethnic group of teenage male and female high school pupils with schoolbags hanging out, talking and walking down steps in their school grounds — Stock Photo
    Front view of a multi-ethnic group of teenage male and female high school pupils with schoolbags hanging out, talking and walking down steps in their school grounds