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    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
    Teacher and students during chemistry lesson, wearing protective eyewear and looking at test tubes — Stock Photo
    Teacher and students during chemistry lesson, wearing protective eyewear and looking at test tubes
    Side view of two teenage Caucasian male field hockey players from opposing teams in action on the pitch during a hockey game on a sunny day — Stock Photo
    Side view of two teenage Caucasian male field hockey players from opposing teams in action on the pitch during a hockey game on a sunny day
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory — Stock Photo
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory
    Schoolboy standing near chalkboard in classroom at school — Stock Photo
    Schoolboy standing near chalkboard in classroom at school
    Front view of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and using laptop computer, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Front view of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and using laptop computer, with teenage male and female classmates sitting at desks working in the background
    Students researching, using digital tablet at table in library — Stock Photo
    Students researching, using digital tablet at table in library
    Side view of a teenage Caucasian boy in a school classroom sitting at desk, concentrating and smiling, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Side view of a teenage Caucasian boy in a school classroom sitting at desk, concentrating and smiling, with teenage male and female classmates sitting at desks working in the background
    Junior high students in library — Stock Photo
    Junior high students in library
    Happy elementary school boy using digital tablet in classroom — Stock Photo
    Happy elementary school boy using digital tablet in classroom
    France, Seine et Marne. Crafts. Close up of candied clementines. — Stock Photo
    France, Seine et Marne. Crafts. Close up of candied clementines.
    Side view of a multi-ethnic group of high school teenage male and female school pupils in a classroom, sitting at a table working together — Stock Photo
    Side view of a multi-ethnic group of high school teenage male and female school pupils in a classroom, sitting at a table working together
    Male teacher supervising students writing their GCSE exam in classroom — Stock Photo
    Male teacher supervising students writing their GCSE exam in classroom
    Teenage boys spray painting in high school art class — Stock Photo
    Teenage boys spray painting in high school art class
    High school teacher helping students studying in classroom — Stock Photo
    High school teacher helping students studying in classroom
    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
    College students writing on book while sitting at desks during exam in classroom — Stock Photo
    College students writing on book while sitting at desks during exam in classroom
    Curious girl examining molecule model in classroom — Stock Photo
    Curious girl examining molecule model in classroom
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria. — Stock Photo
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria.
    France, Northern France, Pas de Calais. Calais. Community gardens. — Stock Photo
    France, Northern France, Pas de Calais. Calais. Community gardens.
    Curious junior high school students looking at globe in classroom — Stock Photo
    Curious junior high school students looking at globe in classroom
    Portrait close up of a teenage African American male field hockey player, wearing a red team strip, standing in the changing room, looking straight to camera, focusing before a game — Stock Photo
    Portrait close up of a teenage African American male field hockey player, wearing a red team strip, standing in the changing room, looking straight to camera, focusing before a game
    Junior high students using computer in computer lab — Stock Photo
    Junior high students using computer in computer lab
    Side view close up of a Caucasian teenage girl sitting in front of a window playing a flute, selective focus — Stock Photo
    Side view close up of a Caucasian teenage girl sitting in front of a window playing a flute, selective focus
    Front view of a multi-ethnic group of teenage pupils standing together in a classroom and smiling to camera at break time — Stock Photo
    Front view of a multi-ethnic group of teenage pupils standing together in a classroom and smiling to camera at break time
    Male teacher leading lesson at touch screen in classroom — Stock Photo
    Male teacher leading lesson at touch screen in classroom
    Portrait of smiling, confident junior high student carrying books — Stock Photo
    Portrait of smiling, confident junior high student carrying books
    Teenagers playing pool in community center — Stock Photo
    Teenagers playing pool in community center
    Girl students using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students using microscope, conducting scientific experiment in laboratory classroom
    Portrait of a Caucasian teenage girl with long, dark hair and brown eyes standing in a school classroom smiling to camera, with classmates talking in the background — Stock Photo
    Portrait of a Caucasian teenage girl with long, dark hair and brown eyes standing in a school classroom smiling to camera, with classmates talking in the background
    Teacher helping junior high school students at desk in classroom — Stock Photo
    Teacher helping junior high school students at desk in classroom
    Thoughtful male student with classmates at desk in classroom — Stock Photo
    Thoughtful male student with classmates at desk in classroom
    Teenagers playing pool indoors — Stock Photo
    Teenagers playing pool indoors
    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
    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 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
    Side view 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 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
    High school girls talking on stairs — Stock Photo
    High school girls talking on stairs
    Front view 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, with the arm of the female conductor in the foreground — Stock Photo
    Front view 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, with the arm of the female conductor in the foreground
    Driving south on Chuckanut Drive out of Belllingham on an October day with the leaves on the trees turning yellow; Washington, United States of America — Stock Photo
    Driving south on Chuckanut Drive out of Belllingham on an October day with the leaves on the trees turning yellow; Washington, United States of America
    Front view close up of a Caucasian teenage boy musician with brown shirt sitting in front of a window playing a French horn alone at school — Stock Photo
    Front view close up of a Caucasian teenage boy musician with brown shirt sitting in front of a window playing a French horn alone at school
    Teenagers playing pool indoors — Stock Photo
    Teenagers playing pool indoors
    University students performing experiment in lab — Stock Photo
    University students performing experiment in lab
    Smiling girl students assembling computer in classroom — Stock Photo
    Smiling girl students assembling computer in classroom
    Portrait of college students with arms crossed standing in lab — Stock Photo
    Portrait of college students with arms crossed standing in lab
    Junior high students using computer in computer lab — Stock Photo
    Junior high students using computer in computer lab
    Side view of a group of female Caucasian field hockey players preparing before a game, sitting in a changing room, putting on their shoes and gaiters — Stock Photo
    Side view of a group of female Caucasian field hockey players preparing before a game, sitting in a changing room, putting on their shoes and gaiters
    Rear view of a Caucasian male field hockey goalkeeper, diving to stop the ball with a hockey stick while training on the hockey pitch, with his teammates in the background on a sunny day — Stock Photo
    Rear view of a Caucasian male field hockey goalkeeper, diving to stop the ball with a hockey stick while training on the hockey pitch, with his teammates in the background on a sunny day
    Junior high students using computer in computer lab — Stock Photo
    Junior high students using computer in computer lab
    Front view of multi-ethnic group of teenagers in a high school classroom sitting at desks, all raising their hands to answer a question — Stock Photo
    Front view of multi-ethnic group of teenagers in a high school classroom sitting at desks, all raising their hands to answer a question
    Junior high school girl student doing homework at desk in classroom — Stock Photo
    Junior high school girl student doing homework at desk in classroom
    Side view close up of a multi-ethnic group of teenage male and female choristers holding sheet music and laughing, standing on the stage of a school theatre during a break in 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 laughing, standing on the stage of a school theatre during a break in rehearsals for a performance
    Low section front view close up of two teenage female high school pupils, using smartphones and sitting on steps in the school grounds — Stock Photo
    Low section front view close up of two teenage female high school pupils, using smartphones and sitting on steps in the school grounds
    Female teacher helping girl students researching at laptop at library table — Stock Photo
    Female teacher helping girl students researching at laptop at library table
    Elevated view of students writing their GCSE exam — Stock Photo
    Elevated view of students writing their GCSE exam
    High angle view of students practicing diagram while studyhing at desk in classroom — Stock Photo
    High angle view of students practicing diagram while studyhing at desk in classroom
    Sri Lanka. Mirissa, cinnamon plantation. Drying cinnamon sticks. — Stock Photo
    Sri Lanka. Mirissa, cinnamon plantation. Drying cinnamon sticks.
    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
    Portrait of male college student with arms crossed standing in lab — Stock Photo
    Portrait of male college student with arms crossed standing in lab
    Girl students researching, using computer in library — Stock Photo
    Girl students researching, using computer in library