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    Professor teaching in classroom with students at high school — Stock Photo
    Professor teaching in classroom with students at high school
    Young students studying in classroom — Stock Photo
    Young students studying in classroom
    Junior high school students studying in classroom — Stock Photo
    Junior high school students studying 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
    University students studying in library — Stock Photo
    University students studying in library
    Curious, smiling students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Curious, smiling students watching chemical reaction, conducting scientific experiment in laboratory classroom
    High school girl students studying in classroom — Stock Photo
    High school girl students studying in classroom
    Side view of a Caucasian female field hockey player, during a field hockey game, executing a penalty kick, with a goal protected by a goalkeeper in the background, on a sunny day — Stock Photo
    Side view of a Caucasian female field hockey player, during a field hockey game, executing a penalty kick, with a goal protected by a goalkeeper in the background, on a sunny day
    Junior high school boy placing notebook in backpack in classroom — Stock Photo
    Junior high school boy placing notebook in backpack in classroom
    Portrait confident young man looking away — Stock Photo
    Portrait confident young man looking away
    Rear view of a multi-ethnic group of male and female teenage students talking as they walk through their school grounds — Stock Photo
    Rear view of a multi-ethnic group of male and female teenage students talking as they walk through their school grounds
    Side view 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
    Side view 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
    Front view of a Caucasian female and male high school student couple hanging out, standing in their school grounds, the boy piggybacking the girl — Stock Photo
    Front view of a Caucasian female and male high school student couple hanging out, standing in their school grounds, the boy piggybacking the girl
    Girl student using microscope in classroom — Stock Photo
    Girl student using microscope in classroom
    Portrait confident college students in shop class — Stock Photo
    Portrait confident college students in shop class
    Portrait of a Caucasian female field hockey player, preparing before a game, standing in a changing room, wearing a hockey helmet, with her teammates standing in a row behind her — Stock Photo
    Portrait of a Caucasian female field hockey player, preparing before a game, standing in a changing room, wearing a hockey helmet, with her teammates standing in a row behind her
    Teenage girls studying on bed — Stock Photo
    Teenage girls studying on bed
    Front view of a multi-ethnic group of teenagers in discussion, holding scripts and smiling in the auditorium of an empty school theatre during rehearsals for a performance — Stock Photo
    Front view of a multi-ethnic group of teenagers in discussion, holding scripts and smiling in the auditorium of an empty school theatre during rehearsals for a performance
    Portrait of smiling, confident junior high school students studying in classroom — Stock Photo
    Portrait of smiling, confident junior high school students studying in classroom
    Portrait confident happy high school boy in corridor — Stock Photo
    Portrait confident happy high school boy in corridor
    Focused high school girl student taking exam at desk in classroom — Stock Photo
    Focused high school girl student taking exam at desk in classroom
    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
    Side view of a Caucasian female field hockey player, during a field hockey game, running with a ball, holding a hockey stick, with her teammates and opponents in the background, on a sunny day — Stock Photo
    Side view of a Caucasian female field hockey player, during a field hockey game, running with a ball, holding a hockey stick, with her teammates and opponents in the background, on a sunny day
    Portrait confident young man outside sunny building — Stock Photo
    Portrait confident young man outside sunny building
    Female friends talking in locker room — Stock Photo
    Female friends talking in locker room
    Teenagers eating pizza in community center — Stock Photo
    Teenagers eating pizza in community center
    Confident young female college students descending staircase — Stock Photo
    Confident young female college students descending staircase
    Portrait confident young man in black jacket — Stock Photo
    Portrait confident young man in black jacket
    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 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
    High school boy student taking notes, writing in notebook in classroom — Stock Photo
    High school boy student taking notes, writing in notebook in classroom
    High school students sitting in common room — Stock Photo
    High school students sitting in common room
    Young women friends using smart phone — Stock Photo
    Young women friends using smart phone
    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
    Rear view of a group of female Caucasian field hockey players, preparing before a game, standing in a row embracing, concentrating, on a sunny day — Stock Photo
    Rear view of a group of female Caucasian field hockey players, preparing before a game, standing in a row embracing, concentrating, on a sunny day
    Curious junior high school student using virtual reality simulator in classroom — Stock Photo
    Curious junior high school student using virtual reality simulator in classroom
    High school boy student with hand raised during lesson in classroom — Stock Photo
    High school boy student with hand raised during lesson in classroom
    Front view of a Caucasian teenage girl sitting in a classroom playing a violin at a school band practice, with other teenage musicians sitting in the foreground — Stock Photo
    Front view of a Caucasian teenage girl sitting in a classroom playing a violin at a school band practice, with other teenage musicians sitting in the foreground
    Boy student holding and examining molecular structure — Stock Photo
    Boy student holding and examining molecular structure
    Attentive high school students listening in classroom — Stock Photo
    Attentive high school students listening in classroom
    University students studying in library — Stock Photo
    University students studying in library
    Rear view of a Caucasian male field hockey coach interacting with a group of female Caucasian field hockey players, sitting in a changing room — Stock Photo
    Rear view of a Caucasian male field hockey coach interacting with a group of female Caucasian field hockey players, sitting in a changing room
    Female teacher and students examining DNA model in classroom — Stock Photo
    Female teacher and students examining DNA model in classroom
    Focused high school students taking exam at desks in classroom — Stock Photo
    Focused high school students taking exam at desks in classroom
    Laughing girl student at microscope in laboratory classroom — Stock Photo
    Laughing girl student at microscope in laboratory classroom
    Side view of a Caucasian and a mixed race teenage girls holding scripts, sitting on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view of a Caucasian and a mixed race teenage girls holding scripts, sitting on the stage of a school theatre during rehearsals for a performance
    Girl student examining DNA model in classroom — Stock Photo
    Girl student examining DNA model in classroom
    Young man wearing glasses — Stock Photo
    Young man wearing glasses
    Girl students conducting scientific experiment in chemistry laboratory classroom — Stock Photo
    Girl students conducting scientific experiment in chemistry laboratory classroom
    Front view of a Caucasian female field hockey players, training before a game, standing on a hockey pitch, holding hockey sticks, looking at camera, on a sunny day — Stock Photo
    Front view of a Caucasian female field hockey players, training before a game, standing on a hockey pitch, holding hockey sticks, looking at camera, on a sunny day
    High angle rear view of a group of female Caucasian field hockey players preparing before a game, sitting on a stand, holding hockey sticks, with their Caucasian male field hockey coach standing in front of them — Stock Photo
    High angle rear view of a group of female Caucasian field hockey players preparing before a game, sitting on a stand, holding hockey sticks, with their Caucasian male field hockey coach standing in front of them
    Rear view of a Caucasian male field hockey coach interacting with a multi-ethnic group of teenage male field hockey players, sitting in the changing room, discussing the game — Stock Photo
    Rear view of a Caucasian male field hockey coach interacting with a multi-ethnic group of teenage male field hockey players, sitting in the changing room, discussing the game
    High school teacher supervising students taking exam at desks — Stock Photo
    High school teacher supervising students taking exam at desks
    Side view low section of group of male field hockey players from two teams shaking hands, holding hockey sticks on a hockey pitch on a sunny day — Stock Photo
    Side view low section of group of male field hockey players from two teams shaking hands, holding hockey sticks on a hockey pitch on a sunny day
    Female student using mobile phone — Stock Photo
    Female student using mobile phone
    Side view of a multi-ethnic group of male field hockey players and their Caucasian male coach, preparing before a game, standing in a row on the pitch with their arms around each others shoulders on a sunny day — Stock Photo
    Side view of a multi-ethnic group of male field hockey players and their Caucasian male coach, preparing before a game, standing in a row on the pitch with their arms around each others shoulders on a sunny day
    Front view of a group of female Caucasian field hockey players training before a game, standing on a hockey pitch, resting, one player squatting, on a sunny day — Stock Photo
    Front view of a group of female Caucasian field hockey players training before a game, standing on a hockey pitch, resting, one player squatting, on a sunny day
    High school teacher supervising students taking exam at desks — Stock Photo
    High school teacher supervising students taking exam at desks
    Focused high school boy student taking exam at desk in classroom — Stock Photo
    Focused high school boy student taking exam at desk in classroom
    Side view of a group of female Caucasian field hockey players preparing before a game, sitting on a stand, holding hockey sticks, with their Caucasian male field hockey coach standing in front of them, talking about game plan on a sunny day — Stock Photo
    Side view of a group of female Caucasian field hockey players preparing before a game, sitting on a stand, holding hockey sticks, with their Caucasian male field hockey coach standing in front of them, talking about game plan on a sunny day