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    Overhead view of a teenage Caucasian girl in a high school classroom sitting at desk, concentrating and writing in her notebook — Stock Photo
    Overhead view of a teenage Caucasian girl in a high school classroom sitting at desk, concentrating and writing in her notebook
    Portrait of female student with arms crossed standing in lab — Stock Photo
    Portrait of female student with arms crossed standing in lab
    Junior high school students doing homework at desks in classroom — Stock Photo
    Junior high school students doing homework at desks 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
    Portrait confident junior high school boy studying in classroom — Stock Photo
    Portrait confident junior high school boy studying in classroom
    Front view of a male Caucasian teacher standing and talking to a mixed race teenager male student sitting at his desk using a laptop in a high school classroom, with his multi-ethnic male and female classmates sitting at desks working around him — Stock Photo
    Front view of a male Caucasian teacher standing and talking to a mixed race teenager male student sitting at his desk using a laptop in a high school classroom, with his multi-ethnic male and female classmates sitting at desks working around him
    Side view of a Caucasian female director and a multi-ethnic group of teenage male and female choristers standing opposite each other holding sheet music and singing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view of a Caucasian female director and a multi-ethnic group of teenage male and female choristers standing opposite each other holding sheet music and singing on the stage of a school theatre during rehearsals for a performance
    Front view of a Caucasian teenage girl sitting in the empty auditorium of a school theatre watching her friends on stage during rehearsals for a performance — Stock Photo
    Front view of a Caucasian teenage girl sitting in the empty auditorium of a school theatre watching her friends on stage during rehearsals for a performance
    Smiling female students studying at desk in classroom — Stock Photo
    Smiling female students studying at desk in classroom
    Students practicing experiment in lab — Stock Photo
    Students practicing experiment in lab
    Focused boy student programming at computer in dark classroom — Stock Photo
    Focused boy student programming at computer in dark classroom
    Teenage girls designing denim jacket in fashion design class — Stock Photo
    Teenage girls designing denim jacket in fashion design class
    Side view of a Caucasian male field hockey coach interacting with a group of female Caucasian field hockey players, sitting in a changing room, holding a digital tablet — Stock Photo
    Side view of a Caucasian male field hockey coach interacting with a group of female Caucasian field hockey players, sitting in a changing room, holding a digital tablet
    Side view of a male Caucasian teacher standing and talking with a teenage African American female high school student working on a computer and concentrating in a classroom — Stock Photo
    Side view of a male Caucasian teacher standing and talking with a teenage African American female high school student working on a computer and concentrating in a classroom
    Students researching at computer in dark classroom — Stock Photo
    Students researching at computer in dark classroom
    Side view of a Caucasian male field hockey coach interacting with a group of female Caucasian field hockey players, sitting in a changing room, showing them a game plan, writing on a whiteboard, with one of the players raising her hand — Stock Photo
    Side view of a Caucasian male field hockey coach interacting with a group of female Caucasian field hockey players, sitting in a changing room, showing them a game plan, writing on a whiteboard, with one of the players raising her hand
    High school students talking at table in debate class — Stock Photo
    High school students talking at table in debate class
    High school students with hands raised in classroom — Stock Photo
    High school students with hands raised in classroom
    College students using microscope while practicing experiment in lab — Stock Photo
    College students using microscope while practicing experiment in lab
    Female teacher and girl students using microscope and laptop, conducting scientific experiment in laboratory classroom — Stock Photo
    Female teacher and girl students using microscope and laptop, conducting scientific experiment in laboratory classroom
    Schoolkids studying in the classroom at school — Stock Photo
    Schoolkids studying in the classroom at school
    Portrait confident high school girl student taking notes during geography lesson in classroom — Stock Photo
    Portrait confident high school girl student taking notes during geography lesson in classroom
    Rear view of a multi-ethnic group of teenage male field hockey players and a Caucasian male field hockey coach, motivating before a game, high fiving in a huddle, interacting on the pitch on a sunny day — Stock Photo
    Rear view of a multi-ethnic group of teenage male field hockey players and a Caucasian male field hockey coach, motivating before a game, high fiving in a huddle, interacting on the pitch on a sunny day
    Digital illustration of solid node in right lung near lung apex while secondary tuberculosis infection. — Stock Photo
    Digital illustration of solid node in right lung near lung apex while secondary tuberculosis infection.
    Side view of a teenage Caucasian male field hockey player, standing alone in a corridor wearing a helmet, preparing and focusing before a game — Stock Photo
    Side view of a teenage Caucasian male field hockey player, standing alone in a corridor wearing a helmet, preparing and focusing before a game
    Side view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Side view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating, with teenage male and female classmates sitting at desks working in the background
    Rear view of a multi-ethnic group of teenage male field hockey players, training before a game, working out on a field hockey pitch, sprinting on a sunny day — Stock Photo
    Rear view of a multi-ethnic group of teenage male field hockey players, training before a game, working out on a field hockey pitch, sprinting on a sunny day
    Male high school teacher helping boy student with homework in classroom — Stock Photo
    Male high school teacher helping boy student with homework in classroom
    Schoolboy writing on chalkboard in classroom at school — Stock Photo
    Schoolboy writing on chalkboard in classroom at school
    Female student using desktop computer while sitting at desk in classroom — Stock Photo
    Female student using desktop computer while sitting at desk in classroom
    Teenage female student looking at laptop while studying at desk in classroom — Stock Photo
    Teenage female student looking at laptop while studying at desk in classroom
    Girl students studying at computer in library — Stock Photo
    Girl students studying at computer in library
    Side view of college students studying at desk in classroom — Stock Photo
    Side view of college students studying at desk in classroom
    Rear view of a multi-ethnic group of teenage male and female school pupils with schoolbags hanging out, walking in their high school grounds, one carrying a skateboard — Stock Photo
    Rear view of a multi-ethnic group of teenage male and female school pupils with schoolbags hanging out, walking in their high school grounds, one carrying a skateboard
    Junior high school students using virtual reality simulators in classroom — Stock Photo
    Junior high school students using virtual reality simulators in classroom
    Teenage girls reading book while standing in library seen through glass — Stock Photo
    Teenage girls reading book while standing in library seen through glass
    Side view of a male Caucasian teacher standing and talking with a teenage Caucasian girl working on a computer and concentrating in a classroom, with teenage male and female classmates sitting at desks working in the background and foreground — Stock Photo
    Side view of a male Caucasian teacher standing and talking with a teenage Caucasian girl working on a computer and concentrating in a classroom, with teenage male and female classmates sitting at desks working in the background and foreground
    Female body with cancer metastasis, conceptual computer illustration. — Stock Photo
    Female body with cancer metastasis, conceptual computer illustration.
    Schoolkids having fun in school campus on a sunny day — Stock Photo
    Schoolkids having fun in school campus on a sunny day
    Side view of a Caucasian teenage boy in an empty high school theatre, sitting on steps of the front of the stage, preparing for a performance, holding a script and learning lines — Stock Photo
    Side view of a Caucasian teenage boy in an empty high school theatre, sitting on steps of the front of the stage, preparing for a performance, holding a script and learning lines
    Portrait of teenage girl with arms crossed standing by desk in lab — Stock Photo
    Portrait of teenage girl with arms crossed standing by desk in lab
    Portrait confident junior high students and teachers from above — Stock Photo
    Portrait confident junior high students and teachers from above
    Rear view of a Caucasian female field hockey goalkeeper, during a field hockey game, standing in a goal, preparing to defend a penalty kick, with her teammates and opponents in the background, on a sunny day — Stock Photo
    Rear view of a Caucasian female field hockey goalkeeper, during a field hockey game, standing in a goal, preparing to defend a penalty kick, with her teammates and opponents in the background, on a sunny day
    Junior high school students using virtual reality simulators in dark classroom — Stock Photo
    Junior high school students using virtual reality simulators in dark classroom
    Side view of a Caucasian teenage boy sitting on the edge of the stage holding a script in an empty school theatre during rehearsals for a performance — Stock Photo
    Side view of a Caucasian teenage boy sitting on the edge of the stage holding a script in an empty school theatre during rehearsals for a performance
    Side view of a Caucasian male field hockey coach interacting with a group of female Caucasian field hockey players, sitting in a changing room, showing them a game plan, writing on a whiteboard — Stock Photo
    Side view of a Caucasian male field hockey coach interacting with a group of female Caucasian field hockey players, sitting in a changing room, showing them a game plan, writing on a whiteboard
    Female teacher in hijab answering student questions in classroom — Stock Photo
    Female teacher in hijab answering student questions in classroom
    University students sitting at table during exam in classroom — Stock Photo
    University students sitting at table during exam in classroom
    Students during IT lesson at class — Stock Photo
    Students during IT lesson at class
    Female teenage students studying at desk in classroom — Stock Photo
    Female teenage students studying at desk in classroom
    Human ovary structure — Stock Photo
    Human ovary structure
    Front view of a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Front view of a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance
    High angle side view of a Caucasian male teacher sitting in a classroom conducting a multi-ethnic group of teenage male and female musicians at a school band practice — Stock Photo
    High angle side view of a Caucasian male teacher sitting in a classroom conducting a multi-ethnic group of teenage male and female musicians at a school band practice
    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
    Front view of a teenage Caucasian boy and a teenage African American girl in a high school classroom sitting a desk, using a tablet computer, with teenage classmates sitting at desks working in the background — Stock Photo
    Front view of a teenage Caucasian boy and a teenage African American girl in a high school classroom sitting a desk, using a tablet computer, with teenage classmates sitting at desks working in the background
    High school girls ascending stairs — Stock Photo
    High school girls ascending stairs
    Teenage girl looking at computer while sitting at desk in lab — Stock Photo
    Teenage girl looking at computer while sitting at desk in lab
    Portrait of smiling female student wearing school uniform standing in corridor — Stock Photo
    Portrait of smiling female student wearing school uniform standing in corridor
    Male teacher relaxing in classroom at school — Stock Photo
    Male teacher relaxing in classroom at school
    Female university student using digital tablet while studying at desk in classroom — Stock Photo
    Female university student using digital tablet while studying at desk in classroom