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    Girl student examining and touching molecular structure in classroom — Stock Photo
    Girl student examining and touching molecular structure in classroom
    College students studying together — Stock Photo
    College students studying together
    Junior high school boys watching teacher during lesson in classroom — Stock Photo
    Junior high school boys watching teacher during lesson in classroom
    High school students watching teacher at projection screen during lesson in classroom — Stock Photo
    High school students watching teacher at projection screen during lesson in classroom
    Teacher leading lesson, calling on students in classroom — Stock Photo
    Teacher leading lesson, calling on students in classroom
    Happy female friends using smart phone in park — Stock Photo
    Happy female friends using smart phone in park
    Rear view of a multi-ethnic group of teenagers in a school high school classroom sitting at desks and listening to their male Caucasian teacher standing at the front of a class — Stock Photo
    Rear view of a multi-ethnic group of teenagers in a school high school classroom sitting at desks and listening to their male Caucasian teacher standing at the front of a class
    Bleachers at high school sports field — Stock Photo
    Bleachers at high school sports field
    Students and teacher drawing in classroom — Stock Photo
    Students and teacher drawing in classroom
    Science professor and college students using microscopes in science laboratory classroom — Stock Photo
    Science professor and college students using microscopes in science laboratory classroom
    High View of Teen Boy Playing on Gaming Computer at Messy Desk — Stock Photo
    High View of Teen Boy Playing on Gaming Computer at Messy Desk
    Side view close up 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
    Side view close up 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
    Portrait of playful, exuberant junior high student smiling — Stock Photo
    Portrait of playful, exuberant junior high student smiling
    Curious junior high school students looking at globe in classroom — Stock Photo
    Curious junior high school students looking at globe in classroom
    Determined young male basketball player dribbling the ball — Stock Photo
    Determined young male basketball player dribbling the ball
    High school students listening to lecture in classroom — Stock Photo
    High school students listening to lecture in classroom
    Portrait of a Caucasian female field hockey player, preparing before a game, standing on a hockey pitch, looking at camera, holding a hockey stick on her shoulders, with her teammates standing in the background on a sunny day — Stock Photo
    Portrait of a Caucasian female field hockey player, preparing before a game, standing on a hockey pitch, looking at camera, holding a hockey stick on her shoulders, with her teammates standing in the background on a sunny day
    Schoolboy using digital tablet — Stock Photo
    Schoolboy using digital tablet
    High angle portrait of a young mixed race boy soccer player sitting on a playing field in the sun and looking up to camera during a soccer training session, with his teammates training in the background — Stock Photo
    High angle portrait of a young mixed race boy soccer player sitting on a playing field in the sun and looking up to camera during a soccer training session, with his teammates training in the background
    Portrait close up of a Caucasian male field hockey goalkeeper, wearing black hockey uniform and a helmet, standing on the pitch and looking to camera, with his teammates in the background on a sunny day — Stock Photo
    Portrait close up of a Caucasian male field hockey goalkeeper, wearing black hockey uniform and a helmet, standing on the pitch and looking to camera, with his teammates in the background on a sunny day
    Side view of a group of female Caucasian field hockey players, preparing before a game, huddling, with one player talking to her Caucasian male coach in the foreground, on a sunny day — Stock Photo
    Side view of a group of female Caucasian field hockey players, preparing before a game, huddling, with one player talking to her Caucasian male coach in the foreground, on a sunny day
    A Group Of Friends At The Classroom Corridor. — Stock Photo
    A Group Of Friends At The Classroom Corridor.
    Side view of a multi-ethnic group of teenage male field hockey players and their Caucasian male field hockey coach, training before a game, working out on a field hockey pitch, doing sit ups with partners holding legs, on a sunny day — Stock Photo
    Side view of a multi-ethnic group of teenage male field hockey players and their Caucasian male field hockey coach, training before a game, working out on a field hockey pitch, doing sit ups with partners holding legs, on a sunny day
    Female teacher and curious girl students examining molecular structure in laboratory classroom — Stock Photo
    Female teacher and curious girl students examining molecular structure in laboratory classroom
    Thoughtful student sitting in library — Stock Photo
    Thoughtful student sitting in library
    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
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory — Stock Photo
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory
    Side view of a teenage mixed race male field hockey player taking a shot at goal during a field hockey match, with player form both teams in the background and the goalkeeper preparing to block the shot, on a sunny day — Stock Photo
    Side view of a teenage mixed race male field hockey player taking a shot at goal during a field hockey match, with player form both teams in the background and the goalkeeper preparing to block the shot, on a sunny day
    Teacher explaining students in classroom — Stock Photo
    Teacher explaining students in classroom
    Mother with arm around teen daughter smiling and looking at tablet — Stock Photo
    Mother with arm around teen daughter smiling and looking at tablet
    Focused junior high school student using highlighter, doing homework in classroom — Stock Photo
    Focused junior high school student using highlighter, doing homework in classroom
    Teacher standing with student — Stock Photo
    Teacher standing with student
    Mature teacher explaining student — Stock Photo
    Mature teacher explaining student
    Side view of a multi-ethnic group of teenage male field hockey players and their Caucasian field hockey coach, training before a game, working out on a field hokey pitch, doing sit ups with their coach on a sunny day — Stock Photo
    Side view of a multi-ethnic group of teenage male field hockey players and their Caucasian field hockey coach, training before a game, working out on a field hokey pitch, doing sit ups with their coach on a sunny day
    High school students talking and studying at table in classroom — Stock Photo
    High school students talking and studying at table in classroom
    Teenagers spray painting in art class — Stock Photo
    Teenagers spray painting in art class
    Focused high school boy student taking exam at desk in classroom — Stock Photo
    Focused high school boy student taking exam at desk in classroom
    Two handsome teenage boys with skateboard standing on the bridge — Stock Photo
    Two handsome teenage boys with skateboard standing on the bridge
    Teenagers playing pool indoors — Stock Photo
    Teenagers playing pool indoors
    Young female college students talking on staircase — Stock Photo
    Young female college students talking on staircase
    Junior high students in library — Stock Photo
    Junior high students in library
    Teen Girl Stands Atop A Large Rock With Blue Skies Surrounding Her — Stock Photo
    Teen Girl Stands Atop A Large Rock With Blue Skies Surrounding Her
    Front entrance to high school of Bradenton, Florida, United States — Stock Photo
    Front entrance to high school of Bradenton, Florida, United States
    Pensive, curious girl student examining molecular structure — Stock Photo
    Pensive, curious girl student examining molecular structure
    Young female college students studying with digital tablet — Stock Photo
    Young female college students studying with digital tablet
    Junior high school boy students using digital tablets at desk in classroom — Stock Photo
    Junior high school boy students using digital tablets at desk in classroom
    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
    Pens and index cards on desks in empty classroom — Stock Photo
    Pens and index cards on desks in empty classroom
    Overhead view young male basketball player jumping to rebound the ball on basketball rim — Stock Photo
    Overhead view young male basketball player jumping to rebound the ball on basketball rim
    Side view of a mixed race teenage male high school student in an empty school theatre during rehearsals for a performance, standing on the stage holding a script and practicing his part, with other pupils holding scripts in the background — Stock Photo
    Side view of a mixed race teenage male high school student in an empty school theatre during rehearsals for a performance, standing on the stage holding a script and practicing his part, with other pupils holding scripts in the background
    Happy female teenage student holding books on stairs — Stock Photo
    Happy female teenage student holding books on stairs
    Boys Cover their Noses to avoid the Sulphur Smell at Great Salt Lake. — Stock Photo
    Boys Cover their Noses to avoid the Sulphur Smell at Great Salt Lake.
    Portrait smiling young male basketball player holding basketball on court — Stock Photo
    Portrait smiling young male basketball player holding basketball on court
    Curious students conducting scientific experiment, watching liquid in vial in laboratory classroom — Stock Photo
    Curious students conducting scientific experiment, watching liquid in vial in laboratory classroom
    University students studying in library — Stock Photo
    University students studying in library
    High school teacher supervising students taking exam at desks — Stock Photo
    High school teacher supervising students taking exam at desks
    Boy writing on paper at desk — Stock Photo
    Boy writing on paper at desk
    Curious girl students conducting scientific experiment in laboratory classroom — Stock Photo
    Curious girl students conducting scientific experiment in laboratory classroom
    Close up focused young male basketball player holding basketball — Stock Photo
    Close up focused young male basketball player holding basketball
    Front view of a group of female Caucasian field hockey players preparing before a game, walking on a hokey pitch, holding hockey sticks — Stock Photo
    Front view of a group of female Caucasian field hockey players preparing before a game, walking on a hokey pitch, holding hockey sticks