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    Boy students examining liquid in test tube, conducting scientific experiment in laboratory classroom — Stock Photo
    Boy students examining liquid in test tube, conducting scientific experiment in laboratory classroom
    Boy Hanging Out In Treehouse With Dog — Stock Photo
    Boy Hanging Out In Treehouse With Dog
    Portrait of enthusiastic junior high students and teachers cheering — Stock Photo
    Portrait of enthusiastic junior high students and teachers cheering
    High school students talking and studying at table in classroom — Stock Photo
    High school students talking and studying at table in classroom
    University students studying together — Stock Photo
    University students studying together
    Close up focused young male basketball player holding basketball — Stock Photo
    Close up focused young male basketball player holding basketball
    Side 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
    Side 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
    Two handsome teenage boys sitting on the wall repairing a skateboard — Stock Photo
    Two handsome teenage boys sitting on the wall repairing a skateboard
    High angle view of rural female teacher and chinese pupils raising hands and smiling at camera in classroom — Stock Photo
    High angle view of rural female teacher and chinese pupils raising hands and smiling at camera in classroom
    Side view a Caucasian male high school teacher, standing at the front of a class, talking to a multi-ethnic group of teenagers in a school classroom sitting at desks in rows, listening — Stock Photo
    Side view a Caucasian male high school teacher, standing at the front of a class, talking to a multi-ethnic group of teenagers in a school classroom sitting at desks in rows, listening
    Students typing at computers in adult education classroom — Stock Photo
    Students typing at computers in adult education classroom
    College students studying together at computers in library — Stock Photo
    College students studying together at computers in library
    Railings and bleachers at high school stadium — Stock Photo
    Railings and bleachers at high school stadium
    Boy body boarding in the waves in the ocean at Martha's Vineyard — Stock Photo
    Boy body boarding in the waves in the ocean at Martha's Vineyard
    High school girl student taking exam at desk — Stock Photo
    High school girl student taking exam at desk
    Smiling teacher talking to high school students on street — Stock Photo
    Smiling teacher talking to high school students on street
    Teacher explaining to junior high students — Stock Photo
    Teacher explaining to junior high students
    Mother walking with daughter and son on a cactus path. — Stock Photo
    Mother walking with daughter and son on a cactus path.
    Junior high school boy opening notebook at desk in classroom — Stock Photo
    Junior high school boy opening notebook at desk in classroom
    Portrait confident teenage boy high school student in shop class — Stock Photo
    Portrait confident teenage boy high school student in shop class
    Front view of a multi-ethnic group of teenage male field hockey players, training before a game, working out on a field hockey pitch, running on a sunny day — Stock Photo
    Front view of a multi-ethnic group of teenage male field hockey players, training before a game, working out on a field hockey pitch, running on a sunny day
    Portrait confident young man with arms crossed outside sunny building — Stock Photo
    Portrait confident young man with arms crossed outside sunny building
    Focused boy student using microscope in classroom — Stock Photo
    Focused boy student using microscope in classroom
    Side view of a teenage Caucasian girl in a school classroom sitting at her desk with her head on her arms, sleeping, 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 her desk with her head on her arms, sleeping, with teenage male and female classmates sitting at desks working in the background
    Smiling high school students talking in debate class — Stock Photo
    Smiling high school students talking in debate class
    Side view of a team of female Caucasian field hockey players, during a field hockey game, celebrating a goal, with disappointed opponents standing in the background, on a sunny day — Stock Photo
    Side view of a team of female Caucasian field hockey players, during a field hockey game, celebrating a goal, with disappointed opponents standing in the background, on a sunny day
    College students studying and talking in sunny classroom — Stock Photo
    College students studying and talking in sunny classroom
    Focused high school boy student taking exam at desk in classroom — Stock Photo
    Focused high school boy student taking exam at desk in classroom
    High school students with hands raised during lesson in classroom — Stock Photo
    High school students with hands raised during lesson in classroom
    Side view of a male Caucasian teacher standing and talking with a teenage Caucasian boy working on a computer and concentrating in a classroom, with teenage male classmates sitting at desks working in the foreground and background — Stock Photo
    Side view of a male Caucasian teacher standing and talking with a teenage Caucasian boy working on a computer and concentrating in a classroom, with teenage male classmates sitting at desks working in the foreground and background
    Side view of a teenage African American male high school student reading to a multi-ethnic class of teenagers sitting at desks in a school classroom listening and concentrating — Stock Photo
    Side view of a teenage African American male high school student reading to a multi-ethnic class of teenagers sitting at desks in a school classroom listening and concentrating
    Junior high girl students entering library — Stock Photo
    Junior high girl students entering library
    Focused young male basketball player shooting the ball — Stock Photo
    Focused young male basketball player shooting the ball
    Female students performing science experiment — Stock Photo
    Female students performing science experiment
    Close up focused young male basketball player shooting the ball — Stock Photo
    Close up focused young male basketball player shooting the ball
    Elevated view of students writing their GCSE exam in classroom — Stock Photo
    Elevated view of students writing their GCSE exam in classroom
    Side view of a group of female Caucasian field hockey players, training before a game, working out on a field hockey pitch, doing exercises, stretching their legs, holding their feet behind their back on a sunny day — Stock Photo
    Side view of a group of female Caucasian field hockey players, training before a game, working out on a field hockey pitch, doing exercises, stretching their legs, holding their feet behind their back on a sunny day
    Wniversity students discussing by whiteboard — Stock Photo
    Wniversity students discussing by whiteboard
    High school students with hands raised during lesson in classroom — Stock Photo
    High school students with hands raised during lesson in classroom
    Enthusiastic teenage boy high-fiving classmate in dance class studio — Stock Photo
    Enthusiastic teenage boy high-fiving classmate in dance class studio
    Student with laptop in classroom — Stock Photo
    Student with laptop in classroom
    Curious students conducting scientific experiment, examining liquid in beaker in laboratory classroom — Stock Photo
    Curious students conducting scientific experiment, examining liquid in beaker in laboratory classroom
    Front view of a multi-ethnic group of teenage pupils sitting at desks in class studying at school with a Caucasian male teacher standing and talking to one Caucasian boy at his desk — Stock Photo
    Front view of a multi-ethnic group of teenage pupils sitting at desks in class studying at school with a Caucasian male teacher standing and talking to one Caucasian boy at his desk
    Male science teacher and students conducting scientific experiment in laboratory classroom — Stock Photo
    Male science teacher and students conducting scientific experiment in laboratory classroom
    Junior high girl students walking in library — Stock Photo
    Junior high girl students walking in library
    Students putting books in drawe — Stock Photo
    Students putting books in drawe
    Junior high schoolgirls studying — Stock Photo
    Junior high schoolgirls studying
    Elevated view of lone female student writing their GCSE exam in classroom — Stock Photo
    Elevated view of lone female student writing their GCSE exam in classroom
    Focused young male basketball player shooting free throw — Stock Photo
    Focused young male basketball player shooting free throw
    Portrait of confident, smiling junior high student — Stock Photo
    Portrait of confident, smiling junior high student
    Students writing their GCSE exam — Stock Photo
    Students writing their GCSE exam
    Portrait close up of a Caucasian teenage boy sitting by a window holding an acoustic guitar and looking to camera in a high school — Stock Photo
    Portrait close up of a Caucasian teenage boy sitting by a window holding an acoustic guitar and looking to camera in a high school
    Front view close up of a Caucasian teenage girl sitting at a desk in a school classroom writing in a notebook, with classmates sitting at desks working in the background — Stock Photo
    Front view close up of a Caucasian teenage girl sitting at a desk in a school classroom writing in a notebook, with classmates sitting at desks working in the background
    Girl writing in book — Stock Photo
    Girl writing in book
    Portrait smiling high school girl in stairway — Stock Photo
    Portrait smiling high school girl in stairway
    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
    Junior high students — Stock Photo
    Junior high students
    Focused junior high school student using digital tablet in classroom — Stock Photo
    Focused junior high school student using digital tablet in classroom
    Portrait smiling, confident junior high school girl in classroom — Stock Photo
    Portrait smiling, confident junior high school girl in 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