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    Students sitting on lecture with teacher in classroom — Stock Photo
    Students sitting on lecture with teacher in classroom
    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
    High school girl students studying in classroom — Stock Photo
    High school girl students studying in classroom
    Portrait of a confident Caucasian female field hockey player, preparing before a game, looking at camera with her teammates standing in a row in the background on a sunny day — Stock Photo
    Portrait of a confident Caucasian female field hockey player, preparing before a game, looking at camera with her teammates standing in a row in the background on a sunny day
    Portrait of confident junior high teacher in library — Stock Photo
    Portrait of confident junior high teacher in library
    Portrait confident young man outside sunny building — Stock Photo
    Portrait confident young man outside sunny building
    Front view of a teenage Caucasian boy in a high school classroom sitting at desk, raising his hand to answer a question, with teenage male classmates sitting at desks working in the background — Stock Photo
    Front view of a teenage Caucasian boy in a high school classroom sitting at desk, raising his hand to answer a question, with teenage male classmates sitting at desks working in the background
    Close Up Overhead View of Teen Boy's Eyes, Eyelashes, Nose, Freckles — Stock Photo
    Close Up Overhead View of Teen Boy's Eyes, Eyelashes, Nose, Freckles
    Portrait confident high school boy student in classroom — Stock Photo
    Portrait confident high school boy student in classroom
    College students talking and laughing in corridor — Stock Photo
    College students talking and laughing in corridor
    Front view of a multi-ethnic group of high school teenage male and female school pupils with schoolbags hanging out and talking, sitting on steps in their school grounds — Stock Photo
    Front view of a multi-ethnic group of high school teenage male and female school pupils with schoolbags hanging out and talking, sitting on steps in their school grounds
    High school students talking on stair landing — Stock Photo
    High school students talking on stair landing
    Determined young male basketball player dunking the ball — Stock Photo
    Determined young male basketball player dunking the ball
    Portrait smiling, confident young male basketball player team celebrating, gesturing thumbs-up — Stock Photo
    Portrait smiling, confident young male basketball player team celebrating, gesturing thumbs-up
    Female teacher helping junior high school students doing homework at desk in classroom — Stock Photo
    Female teacher helping junior high school students doing homework at desk in classroom
    Side view close up of a Caucasian teenage boy sitting alone in a schoolyard wearing headphones and looking at a smartphone — Stock Photo
    Side view close up of a Caucasian teenage boy sitting alone in a schoolyard wearing headphones and looking at a smartphone
    Happy college students talking in corridor — Stock Photo
    Happy college students talking in corridor
    High angle view of students standing in locker room — Stock Photo
    High angle view of students standing in locker room
    Focused young male basketball player shooting the ball — Stock Photo
    Focused young male basketball player shooting the ball
    Teacher helping junior high students using computer in computer lab — Stock Photo
    Teacher helping junior high students using computer in computer lab
    High school students studying in classroom — Stock Photo
    High school students studying in classroom
    Female student sitting alone in classroom during GCSE exam — Stock Photo
    Female student sitting alone in classroom during GCSE exam
    Students during IT lesson at class — Stock Photo
    Students during IT lesson at class
    Side view of a multi-ethnic group of teenage male and female high school pupils in a classroom, working on computers and concentrating — Stock Photo
    Side view of a multi-ethnic group of teenage male and female high school pupils in a classroom, working on computers and concentrating
    Model of human head — Stock Photo
    Model of human head
    Students in chemistery science class — Stock Photo
    Students in chemistery science class
    High school girl friends using smart phone — Stock Photo
    High school girl friends using smart phone
    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
    Portrait confident senior woman studying in adult education classroom — Stock Photo
    Portrait confident senior woman studying in adult education classroom
    Student holding painted fish in classroom — Stock Photo
    Student holding painted fish in classroom
    Female teacher helping girl students researching at laptop at library table — Stock Photo
    Female teacher helping girl students researching at laptop at library table
    Students painting in classroom — Stock Photo
    Students painting in classroom
    Rear view of a teenage multi-ethnic group of male field hockey players, preparing before a game, walking from the changing room to the pitch, backlit — Stock Photo
    Rear view of a teenage multi-ethnic group of male field hockey players, preparing before a game, walking from the changing room to the pitch, backlit
    Happy young male basketball players hugging and celebrating after victory — Stock Photo
    Happy young male basketball players hugging and celebrating after victory
    College students studying together in classroom — Stock Photo
    College students studying together in classroom
    Junior high students using computers in computer lab — Stock Photo
    Junior high students using computers in computer lab
    High school students talking in debate class at table in classroom — Stock Photo
    High school students talking in debate class at table in classroom
    Portrait of silly, cross-eyed junior high student wearing virtual reality simulator — Stock Photo
    Portrait of silly, cross-eyed junior high student wearing virtual reality simulator
    High school teacher supervising students taking exam at desks — Stock Photo
    High school teacher supervising students taking exam at desks
    Happy schoolgirls sitting at desk — Stock Photo
    Happy schoolgirls sitting at desk
    Junior high school students enjoying lesson at desks in classroom — Stock Photo
    Junior high school students enjoying lesson at desks in classroom
    Portrait of happy junior high friends playing basketball in schoolyard — Stock Photo
    Portrait of happy junior high friends playing basketball in schoolyard
    Curious girl students conducting scientific experiment in laboratory classroom — Stock Photo
    Curious girl students conducting scientific experiment in laboratory classroom
    Wide view of young student getting virtual high five from teache — Stock Photo
    Wide view of young student getting virtual high five from teache
    Teenagers playing pool in community center — Stock Photo
    Teenagers playing pool in community center
    Schoolboy using digital tablet — Stock Photo
    Schoolboy using digital tablet
    Young male basketball player dribbling the ball, protecting from defender in basketball game — Stock Photo
    Young male basketball player dribbling the ball, protecting from defender in basketball game
    Front view of a Caucasian teenage female high school student using a smartphone and walking in the school grounds — Stock Photo
    Front view of a Caucasian teenage female high school student using a smartphone and walking in the school grounds
    Happy female friends using smart phone in park — Stock Photo
    Happy female friends using smart phone in park
    Schoolgirl raising hand — Stock Photo
    Schoolgirl raising hand
    Female high school teacher leading lesson at projection screen in classroom — Stock Photo
    Female high school teacher leading lesson at projection screen in classroom
    High school students clapping in debate class — Stock Photo
    High school students clapping in debate class
    Tables in empty classroom — Stock Photo
    Tables in empty classroom
    Students typing at computers in adult education classroom — Stock Photo
    Students typing at computers in adult education classroom
    Front view mid section of musician teenage boy sitting and playing an acoustic guitar. Shot in music school. — Stock Photo
    Front view mid section of musician teenage boy sitting and playing an acoustic guitar. Shot in music school.
    Young male basketball players playing game on court in gymnasium — Stock Photo
    Young male basketball players playing game on court in gymnasium
    Pens and index cards on desks in empty classroom — Stock Photo
    Pens and index cards on desks in empty classroom
    Happy junior high schoolgirl — Stock Photo
    Happy junior high schoolgirl
    Aerial view of Wuming Buddhist College at night of Seda County, Sichuan province, China — Stock Photo
    Aerial view of Wuming Buddhist College at night of Seda County, Sichuan province, China
    Boy student examining DNA model in classroom — Stock Photo
    Boy student examining DNA model in classroom