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    Focused high school boy student taking exam at desk in classroom — Stock Photo
    Focused high school boy student taking exam at desk in classroom
    Students examining DNA model in classroom laboratory — Stock Photo
    Students examining DNA model in classroom laboratory
    Portrait of a teenage girl with red hair; Abbotsford, British Columbia, Canada — Stock Photo
    Portrait of a teenage girl with red hair; Abbotsford, British Columbia, Canada
    Front view of a multi-ethnic group of high school teenage male and female school pupils in a classroom, sitting at a table working together, looking at a laptop computer — Stock Photo
    Front view of a multi-ethnic group of high school teenage male and female school pupils in a classroom, sitting at a table working together, looking at a laptop computer
    High school students doing homework and talking at tables in classroom — Stock Photo
    High school students doing homework and talking at tables in classroom
    Front view of a Caucasian teenage girl and boy holding hands and smiling at each other standing on a school playing field — Stock Photo
    Front view of a Caucasian teenage girl and boy holding hands and smiling at each other standing on a school playing field
    Male instructor leading lesson at projection screen in classroom — Stock Photo
    Male instructor leading lesson at projection screen in classroom
    Two Boys Stand on a Cliff over Dark Water Below — Stock Photo
    Two Boys Stand on a Cliff over Dark Water Below
    Portrait confident male college student in corridor — Stock Photo
    Portrait confident male college student in corridor
    Portrait of playful, exuberant junior high student smiling — Stock Photo
    Portrait of playful, exuberant junior high student smiling
    Portrait confident young man in hoody — Stock Photo
    Portrait confident young man in hoody
    College students studying in park — Stock Photo
    College students studying in park
    Junior high students using computers in computer lab — Stock Photo
    Junior high students using computers in computer lab
    Man drinking coffee on city street — Stock Photo
    Man drinking coffee on city street
    Side view of a multi-ethnic group of teenage male and female musicians sitting in a classroom talking during a break in their school band practice — Stock Photo
    Side view of a multi-ethnic group of teenage male and female musicians sitting in a classroom talking during a break in their school band practice
    Teenage girls designing denim jacket in fashion design class — Stock Photo
    Teenage girls designing denim jacket in fashion design class
    Side view of a Caucasian female and male high school student couple hanging out, standing in their school playing field, the boy piggybacking the girl, with classmates hanging out and talking in the background — Stock Photo
    Side view of a Caucasian female and male high school student couple hanging out, standing in their school playing field, the boy piggybacking the girl, with classmates hanging out and talking in the background
    Close up focused, attentive high school girl student listening in classroom — Stock Photo
    Close up focused, attentive high school girl student listening in classroom
    Side view of a multi-ethnic group of teenage male field hockey players and their Caucasian male field hokey coach training before a game, working out on a field hokey pitch, doing sit ups in a circle on a sunny day while the coach stands watching — Stock Photo
    Side view of a multi-ethnic group of teenage male field hockey players and their Caucasian male field hokey coach training before a game, working out on a field hokey pitch, doing sit ups in a circle on a sunny day while the coach stands watching
    High school students talking in classroom — Stock Photo
    High school students talking in classroom
    Teen Girl Holds A Starfish At The Beach During Low Tide — Stock Photo
    Teen Girl Holds A Starfish At The Beach During Low Tide
    Junior high school students using virtual reality simulators in classroom — Stock Photo
    Junior high school students using virtual reality simulators in classroom
    College students studying together in classroom — Stock Photo
    College students studying together in classroom
    Side view of a Caucasian teenage boy in an empty high school theatre, sitting on steps of the front of the stage, preparing for a performance, holding a script and learning lines — Stock Photo
    Side view of a Caucasian teenage boy in an empty high school theatre, sitting on steps of the front of the stage, preparing for a performance, holding a script and learning lines
    High school students talking at table in debate class — Stock Photo
    High school students talking at table in debate class
    Teenage girls designing denim jacket in fashion design class — Stock Photo
    Teenage girls designing denim jacket in fashion design class
    Female student using mobile phone — Stock Photo
    Female student using mobile phone
    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
    Smiling junior high girl student with braces — Stock Photo
    Smiling junior high girl student with braces
    Teacher helping junior high school students at desk in classroom — Stock Photo
    Teacher helping junior high school students at desk in classroom
    Front view of a Caucasian teenage girl sitting in the empty auditorium of a school theatre watching her friends on stage during rehearsals for a performance — Stock Photo
    Front view of a Caucasian teenage girl sitting in the empty auditorium of a school theatre watching her friends on stage during rehearsals for a performance
    Girl drawing with colored pencils — Stock Photo
    Girl drawing with colored pencils
    Female student writing at desk in classroom — Stock Photo
    Female student writing at desk in classroom
    Side view of an empty classroom, with desks in formation and blackboard behind them, with open windows in sunny day — Stock Photo
    Side view of an empty classroom, with desks in formation and blackboard behind them, with open windows in sunny day
    Science professor and college students using microscopes in science laboratory classroom — Stock Photo
    Science professor and college students using microscopes in science laboratory classroom
    Junior high students talking in library — Stock Photo
    Junior high students talking in library
    Front view close up of a Caucasian teenage girl sitting at a desk in a school classroom looking out of the window, with classmates sitting at desks in the background — Stock Photo
    Front view close up of a Caucasian teenage girl sitting at a desk in a school classroom looking out of the window, with classmates sitting at desks in the background
    Teenage friends using smart phone outside sunny school building — Stock Photo
    Teenage friends using smart phone outside sunny school building
    Man sitting on lockers with female friend in university — Stock Photo
    Man sitting on lockers with female friend in university
    Young women friends in hijabs talking outside sunny building — Stock Photo
    Young women friends in hijabs talking outside sunny building
    Teacher explaining material — Stock Photo
    Teacher explaining material
    Front view of a teenage Caucasian boy sitting a desk looking ahead and raising his hand in a school classroom, with a row of teenage female classmates sitting at desks behind him also raising their hands — Stock Photo
    Front view of a teenage Caucasian boy sitting a desk looking ahead and raising his hand in a school classroom, with a row of teenage female classmates sitting at desks behind him also raising their hands
    Serious, sweating basketball player holding basketball overhead — Stock Photo
    Serious, sweating basketball player holding basketball overhead
    Portrait of a Caucasian female field hockey player, training before a game, working out on a hockey pitch, looking at camera, with her teammates in the background on a sunny day — Stock Photo
    Portrait of a Caucasian female field hockey player, training before a game, working out on a hockey pitch, looking at camera, with her teammates in the background on a sunny day
    Close up focused young male basketball player shooting the ball — Stock Photo
    Close up focused young male basketball player shooting the ball
    High school teacher supervising students taking exam at tables — Stock Photo
    High school teacher supervising students taking exam at tables
    Front view of a multi-ethnic group of teenage male and female high school students with schoolbags hanging out, standing and hand stacking in their school grounds — Stock Photo
    Front view of a multi-ethnic group of teenage male and female high school students with schoolbags hanging out, standing and hand stacking in their school grounds
    Junior high girl students walking in library — Stock Photo
    Junior high girl students walking in library
    Family of four walking happily on a cactus trail. — Stock Photo
    Family of four walking happily on a cactus trail.
    Yellow school buses parked diagonally in parking lot in Seattle, Washington, USA — Stock Photo
    Yellow school buses parked diagonally in parking lot in Seattle, Washington, USA
    High school students with hands raised in debate class — Stock Photo
    High school students with hands raised in debate class
    Side view mid section of musician teenage girl sitting by a window in a shadow and playing a ukulele — Stock Photo
    Side view mid section of musician teenage girl sitting by a window in a shadow and playing a ukulele
    Happy college students taking selfie with digital tablet in park — Stock Photo
    Happy college students taking selfie with digital tablet in park
    High school boy student with backpack leaving classroom — Stock Photo
    High school boy student with backpack leaving classroom
    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
    A member of Tribu Panayanon of Iloilo City National High School, Molo, Iloilo City reacts during the 2015 Dinagyang Festival, Iloilo City, Western Visayas, Philippines — Stock Photo
    A member of Tribu Panayanon of Iloilo City National High School, Molo, Iloilo City reacts during the 2015 Dinagyang Festival, Iloilo City, Western Visayas, Philippines
    Portrait of a High School baseball player in maroon uniform holding his bat — Stock Photo
    Portrait of a High School baseball player in maroon uniform holding his bat
    Happy high school students and teacher clapping in debate class — Stock Photo
    Happy high school students and teacher clapping in debate class
    High school boy student with hand raised during lesson in classroom — Stock Photo
    High school boy student with hand raised during lesson in classroom
    View from above high school students taking exam at desks in classroom — Stock Photo
    View from above high school students taking exam at desks in classroom