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    Portrait confident junior high girl student with braces — Stock Photo
    Portrait confident junior high girl student with braces
    Schoolkids studying in the classroom at school — Stock Photo
    Schoolkids studying in the classroom at school
    Young male college student practicing experiment while standing in lab — Stock Photo
    Young male college student practicing experiment while standing in lab
    Side view of a Caucasian male high school teacher sitting on a chair on the stage in an empty school theatre during rehearsals for a performance, preparing a multi-ethnic group of teenager high school students for a performance — Stock Photo
    Side view of a Caucasian male high school teacher sitting on a chair on the stage in an empty school theatre during rehearsals for a performance, preparing a multi-ethnic group of teenager high school students for a performance
    Teenage female practicing chemistry experiment in lab — Stock Photo
    Teenage female practicing chemistry experiment in lab
    Front view close up of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and writing, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Front view close up of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and writing, with teenage male and female classmates sitting at desks working in the background
    Teenagers with microphone and video camera vlogging — Stock Photo
    Teenagers with microphone and video camera vlogging
    Side view of a teenage Caucasian male field hockey player in action on the pitch, preparing to hit a ball during a hockey game on a sunny day — Stock Photo
    Side view of a teenage Caucasian male field hockey player in action on the pitch, preparing to hit a ball during a hockey game on a sunny day
    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
    Junior high school students using virtual reality simulators in classroom — Stock Photo
    Junior high school students using virtual reality simulators in classroom
    Smiling high school students listening in debate class — Stock Photo
    Smiling high school students listening in debate class
    Portrait confident female high school teacher at projection screen in classroom — Stock Photo
    Portrait confident female high school teacher at projection screen in classroom
    Side view close up of a teenage multi-ethnic group of male field hockey players in a huddle in the changing room, preparing before a game, focusing — Stock Photo
    Side view close up of a teenage multi-ethnic group of male field hockey players in a huddle in the changing room, preparing before a game, focusing
    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
    Tween boys playing basketball in schoolyard — Stock Photo
    Tween boys playing basketball in schoolyard
    Female student reading book while standing by shelf in library — Stock Photo
    Female student reading book while standing by shelf in library
    Students examining DNA model in classroom laboratory — Stock Photo
    Students examining DNA model in classroom laboratory
    Male teacher and girl students conducting scientific experiment at microscope in laboratory classroom — Stock Photo
    Male teacher and girl students conducting scientific experiment at microscope in laboratory classroom
    Front view close up of a Caucasian teenage boy sitting at a desk in a school classroom looking out of the window, with classmates sitting at desks working in the background — Stock Photo
    Front view close up of a Caucasian teenage boy sitting at a desk in a school classroom looking out of the window, with classmates sitting at desks working in the background
    Front view of a multi-ethnic group of teenage male and female high school students with schoolbags hanging out, standing and hand stacking in their school grounds — Stock Photo
    Front view of a multi-ethnic group of teenage male and female high school students with schoolbags hanging out, standing and hand stacking in their school grounds
    Girl student holding molecular structure at microscope in laboratory classroom — Stock Photo
    Girl student holding molecular structure at microscope in laboratory classroom
    Male high school teacher leading lesson at projection screen in classroom — Stock Photo
    Male high school teacher leading lesson at projection screen in classroom
    Smiling female university students studying at desk in classroom — Stock Photo
    Smiling female university students studying at desk in classroom
    Female university student using digital tablet while sitting at desk in classroom — Stock Photo
    Female university student using digital tablet while sitting at desk in classroom
    Side view of a multi-ethnic group of high school teenage male and female school pupils hanging out, talking and looking at a smartphone together, sitting on steps in their school grounds — Stock Photo
    Side view of a multi-ethnic group of high school teenage male and female school pupils hanging out, talking and looking at a smartphone together, sitting on steps in their school grounds
    Teachers talking at library — Stock Photo
    Teachers talking at library
    Portrait of a Caucasian musician teenage girl sitting by a window, looking to camera and holding a ukulele in a high school — Stock Photo
    Portrait of a Caucasian musician teenage girl sitting by a window, looking to camera and holding a ukulele in a high school
    Male science teacher and students laughing, conducting scientific experiment in laboratory classroom — Stock Photo
    Male science teacher and students laughing, conducting scientific experiment in laboratory classroom
    Front 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
    Front 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
    Central Asia, Kyrgyzstan, Issyk Kul Province (Ysyk-K?l), not far from Karakol, haystacks — Stock Photo
    Central Asia, Kyrgyzstan, Issyk Kul Province (Ysyk-K?l), not far from Karakol, haystacks
    Female student writing on adhesive note while studying at desk in classroom — Stock Photo
    Female student writing on adhesive note while studying at desk in classroom
    Portrait close up of a confident mixed race male field hockey player, wearing a red team strip, standing on a hockey pitch looking to camera on a sunny day — Stock Photo
    Portrait close up of a confident mixed race male field hockey player, wearing a red team strip, standing on a hockey pitch looking to camera on a sunny day
    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).
    Girl student using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl student using microscope, conducting scientific experiment in laboratory classroom
    Tween boys playing basketball in schoolyard — Stock Photo
    Tween boys playing basketball in schoolyard
    Teenage female student using digital tablet in desk in classroom — Stock Photo
    Teenage female student using digital tablet in desk in classroom
    Students examining liquids in test tube rack, conducting scientific experiment in laboratory classroom — Stock Photo
    Students examining liquids in test tube rack, conducting scientific experiment in laboratory classroom
    Side view of two teenage Caucasian girls talking in a school classroom, one turning around in her seat to talk to the other, sitting at a desk behind her, concentrating and writing — Stock Photo
    Side view of two teenage Caucasian girls talking in a school classroom, one turning around in her seat to talk to the other, sitting at a desk behind her, concentrating and writing
    Female university student holding equipment while practicing experiment in laboratory — Stock Photo
    Female university student holding equipment while practicing experiment in laboratory
    Portrait confident high school boy student in classroom — Stock Photo
    Portrait confident high school boy student in classroom
    Boys with basketball ball on schoolyard — Stock Photo
    Boys with basketball ball on schoolyard
    Schoolgirl explaining about world map in classroom at school — Stock Photo
    Schoolgirl explaining about world map in classroom at school
    Elegant wedding rings on table — Stock Photo
    Elegant wedding rings on table
    Front view of a group of female Caucasian field hockey players and their Caucasian male field hockey coach, training before a game, working out on a field hockey pitch, doing planks, on a sunny day — Stock Photo
    Front view of a group of female Caucasian field hockey players and their Caucasian male field hockey coach, training before a game, working out on a field hockey pitch, doing planks, on a sunny day
    High school teacher talking, leading lesson in classroom — Stock Photo
    High school teacher talking, leading lesson in classroom
    Portrait close up of a teenage African American male field hockey player, wearing a red team strip, standing in the changing room, looking straight to camera, focusing before a game — Stock Photo
    Portrait close up of a teenage African American male field hockey player, wearing a red team strip, standing in the changing room, looking straight to camera, focusing before a game
    Side view of a teenage Caucasian male field hockey player, training on the hockey pitch before a game, preparing to hit the ball with a hockey stick, with his teammates and coach in the background on a sunny day — Stock Photo
    Side view of a teenage Caucasian male field hockey player, training on the hockey pitch before a game, preparing to hit the ball with a hockey stick, with his teammates and coach in the background on a sunny day
    Cropped image of female university student using laptop at desk in classroom — Stock Photo
    Cropped image of female university student using laptop at desk in classroom
    Front view of a multi-ethnic group of male and female teenager students talking as they walk through their school grounds — Stock Photo
    Front view of a multi-ethnic group of male and female teenager students talking as they walk through their school grounds
    Portrait of smiling, confident male teacher in classroom — Stock Photo
    Portrait of smiling, confident male teacher in classroom
    Teenage girl practicing chemistry experiment in lab — Stock Photo
    Teenage girl practicing chemistry experiment in lab
    Teacher leading lesson at touch screen in classroom — Stock Photo
    Teacher leading lesson at touch screen in classroom
    Young college students at desks by window in classroom — Stock Photo
    Young college students at desks by window in classroom
    Portrait close up of a Caucasian teenage boy with dark hair and grey eyes sitting at a desk in a school classroom looking straight to camera — Stock Photo
    Portrait close up of a Caucasian teenage boy with dark hair and grey eyes sitting at a desk in a school classroom looking straight to camera
    Ovary. Light micrograph (LM) of section through whole ovary. Cortex (outer region) contains numerous corpora lutea (pink) and follicles (purple) at various stages of development — Stock Photo
    Ovary. Light micrograph (LM) of section through whole ovary. Cortex (outer region) contains numerous corpora lutea (pink) and follicles (purple) at various stages of development
    Serious boy student holding molecular structure in classroom — Stock Photo
    Serious boy student holding molecular structure in classroom
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory — Stock Photo
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory
    Schoolkids using digital tablet in classroom at school — Stock Photo
    Schoolkids using digital tablet in classroom at school
    France, Lot et Garonne, aerial view of Lake Buydron near Villefranche du Queyran — Stock Photo
    France, Lot et Garonne, aerial view of Lake Buydron near Villefranche du Queyran
    Side view of a mixed race teenage male high school student in a classroom, working on a computer and concentrating, with other pupils working on computers in the background — Stock Photo
    Side view of a mixed race teenage male high school student in a classroom, working on a computer and concentrating, with other pupils working on computers in the background