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    Smiling male science teacher leading lesson at whiteboard in classroom — Stock Photo
    Smiling male science teacher leading lesson at whiteboard 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, 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, stretching their legs, holding hockey sticks on a sunny day
    Side view of a mixed race teenage boy and African American teenage girl high school student sitting on chairs in an empty school theatre preparing before a performance, holding scripts and rehearsing together — Stock Photo
    Side view of a mixed race teenage boy and African American teenage girl high school student sitting on chairs in an empty school theatre preparing before a performance, holding scripts and rehearsing together
    Elevated view of students writing their GCSE exam in classroom — Stock Photo
    Elevated view of students writing their GCSE exam in classroom
    High school students talking in classroom — Stock Photo
    High school students talking in classroom
    Portrait close up of a teenage Caucasian 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 Caucasian male field hockey player, wearing a red team strip, standing in the changing room, looking straight to camera, focusing before a game
    Junior high girl students walking in library — Stock Photo
    Junior high girl students walking in library
    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
    Side view mid section of male field hockey coach, sitting in the changing room, using a clipboard and drawing a game plan for the team — Stock Photo
    Side view mid section of male field hockey coach, sitting in the changing room, using a clipboard and drawing a game plan for the team
    High school girls talking on stair landing — Stock Photo
    High school girls talking on stair landing
    Junior high school students listening in classroom — Stock Photo
    Junior high school students listening in classroom
    Students programming at computer in classroom — Stock Photo
    Students programming at computer in classroom
    Four hanging in the air colorful balloons with smiley on red against grey wall — Stock Photo
    Four hanging in the air colorful balloons with smiley on red against grey wall
    Students using laptop in the classroom at school — Stock Photo
    Students using laptop in the classroom at school
    Female teacher and students examining DNA model in classroom — Stock Photo
    Female teacher and students examining DNA model in classroom
    Junior high students walking in library — Stock Photo
    Junior high students walking in library
    Boy students conducting scientific experiment, examining liquid in test tube in laboratory classroom — Stock Photo
    Boy students conducting scientific experiment, examining liquid in test tube in laboratory classroom
    France, Brittany, Morbihan. Aerial view. Harvest. — Stock Photo
    France, Brittany, Morbihan. Aerial view. Harvest.
    Serious boy student holding molecular structure in classroom — Stock Photo
    Serious boy student holding molecular structure in classroom
    Side view close up of a Caucasian female field hockey player, preparing before a game, standing in a changing room, with her teammates standing in a row behind her — Stock Photo
    Side view close up of a Caucasian female field hockey player, preparing before a game, standing in a changing room, with her teammates standing in a row behind her
    Portrait of playful, exuberant junior high student smiling — Stock Photo
    Portrait of playful, exuberant junior high student smiling
    Portrait confident high school students on stair landing — Stock Photo
    Portrait confident high school students on stair landing
    Junior high school students participating with hands raised in classroom — Stock Photo
    Junior high school students participating with hands raised in classroom
    Female teacher and students conducting scientific experiment, watching liquid in test tube in laboratory classroom — Stock Photo
    Female teacher and students conducting scientific experiment, watching liquid in test tube in laboratory classroom
    Curious, focused boy examining computer chip in classroom — Stock Photo
    Curious, focused boy examining computer chip in classroom
    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
    Male teacher leading lesson at touch screen television in classroom — Stock Photo
    Male teacher leading lesson at touch screen television in classroom
    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
    Rear view of a teenage Caucasian male field hockey goalkeeper in action on the pitch, diving to stop a ball with a hockey stick, during a hockey match between two multi-ethnic teenage male teams on a sunny day, seen through the goal net — Stock Photo
    Rear view of a teenage Caucasian male field hockey goalkeeper in action on the pitch, diving to stop a ball with a hockey stick, during a hockey match between two multi-ethnic teenage male teams on a sunny day, seen through the goal net
    Side view of a group of female Caucasian field hockey players preparing before a game, kneeling in front of their Caucasian male coach, on a hockey pitch, who gives them game plan, on a sunny day — Stock Photo
    Side view of a group of female Caucasian field hockey players preparing before a game, kneeling in front of their Caucasian male coach, on a hockey pitch, who gives them game plan, on a sunny day
    Schoolkids studying in the classroom at school — Stock Photo
    Schoolkids studying in the classroom at school
    Focused boy student assembling computer in classroom — Stock Photo
    Focused boy student assembling computer in classroom
    High angle mid section of musician teenage girl wearing a striped sweater sitting and playing a ukulele alone — Stock Photo
    High angle mid section of musician teenage girl wearing a striped sweater sitting and playing a ukulele alone
    Front view close up of a Caucasian musician teenage boy sitting and playing an acoustic guitar in a high school — Stock Photo
    Front view close up of a Caucasian musician teenage boy sitting and playing an acoustic guitar in a high school
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria. — Stock Photo
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria.
    Focused boy student soldering circuit board in classroom — Stock Photo
    Focused boy student soldering circuit board in classroom
    Male teacher and students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher and students watching chemical reaction, conducting scientific experiment in laboratory classroom
    Secondary liver cancer — Stock Photo
    Secondary liver cancer
    Girl practicing science experiment in laboratory — Stock Photo
    Girl practicing science experiment in laboratory
    Side view of a multi-ethnic group of teenage male field hokey players, training with their coach before a game, working out on a field hockey pitch on a sunny day, running on the spot — Stock Photo
    Side view of a multi-ethnic group of teenage male field hokey players, training with their coach before a game, working out on a field hockey pitch on a sunny day, running on the spot
    Female college students practicing chemistry experiment in lab — Stock Photo
    Female college students practicing chemistry experiment in lab
    Portrait close up of a Caucasian teenage boy with dark hair and grey eyes sitting at a desk in a school classroom looking straight to camera — Stock Photo
    Portrait close up of a Caucasian teenage boy with dark hair and grey eyes sitting at a desk in a school classroom looking straight to camera
    Teenage girl using digital tablet while standing by desk in lab — Stock Photo
    Teenage girl using digital tablet while standing by desk in lab
    Rear view of a Caucasian male high school teacher sitting on a chair on the stage in an empty school theatre and pointing during rehearsals for a performance, preparing a multi-ethnic group of teenage high school students for a performance — Stock Photo
    Rear view of a Caucasian male high school teacher sitting on a chair on the stage in an empty school theatre and pointing during rehearsals for a performance, preparing a multi-ethnic group of teenage high school students for a performance
    Portrait confident male high school teacher in classroom — Stock Photo
    Portrait confident male high school teacher in classroom
    Male teacher helping girl student using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher helping girl student using microscope, conducting scientific experiment in laboratory classroom
    Side view of a Caucasian female field hockey goalkeeper, during a field hockey game, protecting a goal from a ball, on a sunny day — Stock Photo
    Side view of a Caucasian female field hockey goalkeeper, during a field hockey game, protecting a goal from a ball, on a sunny day
    Teacher helping junior high students using computer in computer lab — Stock Photo
    Teacher helping junior high students using computer in computer lab
    High school students with hands raised during lesson in classroom — Stock Photo
    High school students with hands raised during lesson in classroom
    Male teacher leading lesson at touch screen in classroom — Stock Photo
    Male teacher leading lesson at touch screen in classroom
    Secondary follicles in an ovary — Stock Photo
    Secondary follicles in an ovary
    Junior high students talking in library — Stock Photo
    Junior high students talking in library
    Portrait smiling, confident girl student researching at computer in library — Stock Photo
    Portrait smiling, confident girl student researching at computer in library
    Male teacher and boy student using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher and boy student using microscope, conducting scientific experiment in laboratory classroom
    Rear view of a Caucasian female field hockey goalkeeper, during a field hockey game, standing in a goal, preparing to defend a penalty kick, with her teammates and opponents in the background, on a sunny day — Stock Photo
    Rear view of a Caucasian female field hockey goalkeeper, during a field hockey game, standing in a goal, preparing to defend a penalty kick, with her teammates and opponents in the background, on a sunny day
    Schoolkid using digital tablet in classroom at school — Stock Photo
    Schoolkid using digital tablet 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
    Junior high students using computer in computer lab — Stock Photo
    Junior high students using computer in computer lab
    Portrait smiling, confident girl student next to DNA model in classroom — Stock Photo
    Portrait smiling, confident girl student next to DNA model in classroom
    Low angle side view of a group of female Caucasian field hockey players, before a game, standing in a row, greeting the opponents, on a sunny day — Stock Photo
    Low angle side view of a group of female Caucasian field hockey players, before a game, standing in a row, greeting the opponents, on a sunny day