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    Boy student examining DNA model in laboratory classroom — Stock Photo
    Boy student examining DNA model in laboratory classroom
    Junior high students walking in library — Stock Photo
    Junior high students walking in library
    Front view of a group of female Caucasian field hockey players, training before a game, working out on a field hockey pitch, doing push ups, on a sunny day — Stock Photo
    Front view of a group of female Caucasian field hockey players, training before a game, working out on a field hockey pitch, doing push ups, on a sunny day
    College students talking outside sunny building — Stock Photo
    College students talking outside sunny building
    Portrait confident college students in lobby — Stock Photo
    Portrait confident college students in lobby
    Students painting in classroom — Stock Photo
    Students painting in classroom
    Students raising hands in classroom — Stock Photo
    Students raising hands in classroom
    Young woman reading book — Stock Photo
    Young woman reading book
    Man teaching little boy at home with family on background — Stock Photo
    Man teaching little boy at home with family on background
    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
    Front 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
    Front 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
    Front view of a group of female Caucasian field hockey players preparing before a game, standing in a changing room, one is putting her hand on a shoulder of her teammate — Stock Photo
    Front view of a group of female Caucasian field hockey players preparing before a game, standing in a changing room, one is putting her hand on a shoulder of her teammate
    Front view of two Caucasian teenage boys sitting in front of a window playing a trombone and a French horn — Stock Photo
    Front view of two Caucasian teenage boys sitting in front of a window playing a trombone and a French horn
    View from above high school teacher supervising students taking exam — Stock Photo
    View from above high school teacher supervising students taking exam
    Teacher explaining material — Stock Photo
    Teacher explaining material
    Enthusiastic college students high-fiving in stairway — Stock Photo
    Enthusiastic college students high-fiving in stairway
    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
    Happy young college students talking and studying in library — Stock Photo
    Happy young college students talking and studying in library
    High school students clapping for classmate in debate class — Stock Photo
    High school students clapping for classmate in debate class
    Thoughtful teenage girl looking out window — Stock Photo
    Thoughtful teenage girl looking out window
    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
    Junior high students using computer in computer lab — Stock Photo
    Junior high students using computer in computer lab
    Mixed race girl walking on a cactus trail with her long hair flying. — Stock Photo
    Mixed race girl walking on a cactus trail with her long hair flying.
    Portrait confident student in adult education classroom — Stock Photo
    Portrait confident student in adult education classroom
    High school teacher supervising students taking exam at desks — Stock Photo
    High school teacher supervising students taking exam at desks
    Thailand, Chang Wat Phang-nga, Tambon Khuekkhak, classroom of a school in Takuapa — Stock Photo
    Thailand, Chang Wat Phang-nga, Tambon Khuekkhak, classroom of a school in Takuapa
    Close up focused young male basketball player shooting free throw — Stock Photo
    Close up focused young male basketball player shooting free throw
    Focused junior high school student using digital tablet in classroom — Stock Photo
    Focused junior high school student using digital tablet in classroom
    Front view of a Caucasian teenage male high school pupil, using a smartphone and sitting on steps in the school grounds — Stock Photo
    Front view of a Caucasian teenage male high school pupil, using a smartphone and sitting on steps in the school grounds
    Focused high school boy taking exam at desk in classroom — Stock Photo
    Focused high school boy taking exam 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
    Side view of a group of female Caucasian field hockey players training before a game, working out on a field hockey pitch, doing exercises, running, holding hockey sticks 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, running, holding hockey sticks on a sunny day
    Portrait of a Caucasian musician teenage girl sitting by a window, looking down and playing a ukulele in a high school — Stock Photo
    Portrait of a Caucasian musician teenage girl sitting by a window, looking down and playing a ukulele in a high school
    Teenage girls studying on bed — Stock Photo
    Teenage girls studying on bed
    Students and teacher drawing in classroom — Stock Photo
    Students and teacher drawing in classroom
    Three Siblings Climb Atop A Huge Rock Formation At The Beach — Stock Photo
    Three Siblings Climb Atop A Huge Rock Formation At The Beach
    Male teacher and students conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher and students conducting scientific experiment in laboratory classroom
    Portrait of a teenage Caucasian male field hockey player with red hair, wearing a red team strip, standing on a hockey pitch, with his teammates in the background on a sunny day — Stock Photo
    Portrait of a teenage Caucasian male field hockey player with red hair, wearing a red team strip, standing on a hockey pitch, with his teammates in the background on a sunny day
    Portrait confident male high school teacher in classroom — Stock Photo
    Portrait confident male high school teacher in classroom
    Junior high students raising hands — Stock Photo
    Junior high students raising hands
    Students writing their GCSE exam in classroom — Stock Photo
    Students writing their GCSE exam in classroom
    Low section close up of female field hockey player preparing before a game, sitting in a changing room, putting on her leg pad — Stock Photo
    Low section close up of female field hockey player preparing before a game, sitting in a changing room, putting on her leg pad
    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
    Close up focused young male basketball player with basketball looking up — Stock Photo
    Close up focused young male basketball player with basketball looking up
    Young female college student using smart phone — Stock Photo
    Young female college student using smart phone
    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, bending down to their feet 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, bending down to their feet on a sunny day
    Overhead view young male basketball players jumping to rebound basketball at net on basketball court — Stock Photo
    Overhead view young male basketball players jumping to rebound basketball at net on basketball court
    Group of students in class — Stock Photo
    Group of students in class
    Portrait confident female teacher at projection screen in classroom — Stock Photo
    Portrait confident female teacher at projection screen in classroom
    Side view mid section of a mixed race teenage schoolgirl sitting at a desk in class using a laptop computer — Stock Photo
    Side view mid section of a mixed race teenage schoolgirl sitting at a desk in class using a laptop computer
    Female teacher and junior high school students studying at desk in classroom — Stock Photo
    Female teacher and junior high school students studying at desk in classroom
    Side view mid section of group of teenage male and female choristers standing in a row holding sheet music on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view mid section of group of teenage male and female choristers standing in a row holding sheet music on the stage of a school theatre during rehearsals for a performance
    Junior high school students using computer in classroom — Stock Photo
    Junior high school students using computer in classroom
    Distant side view of a Caucasian teenage male high school student in an empty high school theatre preparing before a performance, sitting on chair on the stage, holding a script and practicing his part — Stock Photo
    Distant side view of a Caucasian teenage male high school student in an empty high school theatre preparing before a performance, sitting on chair on the stage, holding a script and practicing his part
    Happy, laughing junior high school students in classroom — Stock Photo
    Happy, laughing junior high school students in classroom
    Smiling male teacher leading lesson in classroom — Stock Photo
    Smiling male teacher leading lesson in 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
    Over the shoulder 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
    Over the shoulder 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
    Teacher teaching girl — Stock Photo
    Teacher teaching girl
    Focused high school girl student taking exam at desk in classroom — Stock Photo
    Focused high school girl student taking exam at desk in classroom