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    Front view of a male Caucasian teacher standing, using a laptop and talking to a multi-ethnic group of teenagers in a school high school classroom sitting at desks and listening — Stock Photo
    Front view of a male Caucasian teacher standing, using a laptop and talking to a multi-ethnic group of teenagers in a school high school classroom sitting at desks and listening
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory — Stock Photo
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory
    Female university student holding equipment while practicing experiment in laboratory — Stock Photo
    Female university student holding equipment while practicing experiment in laboratory
    College students practicing chemistry experiment at desk in lab — Stock Photo
    College students practicing chemistry experiment at desk in lab
    Front view of a Caucasian male field hockey coach holding a clipboard, surrounded by a multi-ethnic group of teenage male field hockey players, listening to him on a sunny day while he explains a game plan, preparing his team for a match — Stock Photo
    Front view of a Caucasian male field hockey coach holding a clipboard, surrounded by a multi-ethnic group of teenage male field hockey players, listening to him on a sunny day while he explains a game plan, preparing his team for a match
    Focused boy student assembling computer in classroom — Stock Photo
    Focused boy student assembling computer in classroom
    Smiling boy wearing goggles and lab coat in laboratory classroom — Stock Photo
    Smiling boy wearing goggles and lab coat in laboratory classroom
    Focused junior high school student using highlighter, doing homework in classroom — Stock Photo
    Focused junior high school student using highlighter, doing homework in classroom
    Happy, smiling high school girl student talking with classmate in classroom — Stock Photo
    Happy, smiling high school girl student talking with classmate 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
    Schoolkids holding sketch pens in classroom at school — Stock Photo
    Schoolkids holding sketch pens in classroom at school
    Female teacher helping students working at computers in computer lab classroom — Stock Photo
    Female teacher helping students working at computers in computer lab classroom
    Portrait confident african american boy playing basketball in schoolyard — Stock Photo
    Portrait confident african american boy playing basketball in schoolyard
    Portrait confident, smiling female teacher and girl students researching at computer in library — Stock Photo
    Portrait confident, smiling female teacher and girl students researching at computer in library
    Portrait of a Caucasian female field hockey players, training before a game, standing on a hockey pitch with a hockey stick on her shoulder, looking at camera, with her teammates standing in a row behind her on a sunny day — Stock Photo
    Portrait of a Caucasian female field hockey players, training before a game, standing on a hockey pitch with a hockey stick on her shoulder, looking at camera, with her teammates standing in a row behind her on a sunny day
    Side view of a multi-ethnic group of teenage male field hockey players, preparing before a game, sitting in a changing room, getting ready, tying shoes and focusing — Stock Photo
    Side view of a multi-ethnic group of teenage male field hockey players, preparing before a game, sitting in a changing room, getting ready, tying shoes and focusing
    Junior high students in library — Stock Photo
    Junior high students in library
    Students studying in the classroom at school — Stock Photo
    Students studying in the classroom at school
    Side view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Side view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating, with teenage male and female classmates sitting at desks working in the background
    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
    Junior high school students using smartphone at desk in classroom — Stock Photo
    Junior high school students using smartphone at desk 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
    Junior high school students at desks in classroom — Stock Photo
    Junior high school students at desks in classroom
    France, Normandy, Montmartin-sur Mer, Haystacks mechanically rolled at the time of harvest. — Stock Photo
    France, Normandy, Montmartin-sur Mer, Haystacks mechanically rolled at the time of harvest.
    Female teacher and students watching scientific experiment chemical reaction in laboratory classroom — Stock Photo
    Female teacher and students watching scientific experiment chemical reaction in laboratory classroom
    Curious girl student examining molecular structure — Stock Photo
    Curious girl student examining molecular structure
    Male teacher teaching students in the classroom at school — Stock Photo
    Male teacher teaching students in the classroom at school
    Portrait close up of a Caucasian teenage boy with dark hair and grey eyes sitting at a desk in a school classroom wearing headphones around his neck, smiling 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 wearing headphones around his neck, smiling to camera
    Female students reading book while standing by shelf in library — Stock Photo
    Female students reading book while standing by shelf in library
    High school students clapping for classmate in debate class — Stock Photo
    High school students clapping for classmate in debate class
    Male teacher calling on students in classroom — Stock Photo
    Male teacher calling on students in classroom
    Side view of multi-ethnic group of high school teenagers in a school classroom sitting at desks, all raising their hands to answer a question — Stock Photo
    Side view of multi-ethnic group of high school teenagers in a school classroom sitting at desks, all raising their hands to answer a question
    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
    University students performing experiment in lab — Stock Photo
    University students performing experiment in lab
    High angle view of a Caucasian teenage boy playing a trombone during a school band practice, with a Caucasian teenage girl and other teenage musicians sitting in the background — Stock Photo
    High angle view of a Caucasian teenage boy playing a trombone during a school band practice, with a Caucasian teenage girl and other teenage musicians sitting in the background
    Focused boy student soldering circuit board in classroom — Stock Photo
    Focused boy student soldering circuit board in classroom
    High school girl student doing homework at table in classroom — Stock Photo
    High school girl student doing homework at table in classroom
    Male science teacher and students conducting scientific experiment in laboratory classroom — Stock Photo
    Male science teacher and students conducting scientific experiment in laboratory classroom
    Front view of a male Caucasian teacher holding a tablet and talking to a multi-ethnic group of teenagers in a school high school classroom sitting at desks and listening — Stock Photo
    Front view of a male Caucasian teacher holding a tablet and talking to a multi-ethnic group of teenagers in a school high school classroom sitting at desks and listening
    Focused girl student programming robotics at laptop in classroom — Stock Photo
    Focused girl student programming robotics at laptop in classroom
    Male teacher teaching students in the class at school — Stock Photo
    Male teacher teaching students in the class at school
    Pensive, curious girl student examining molecular structure — Stock Photo
    Pensive, curious girl student examining molecular structure
    Front view close up of a Caucasian teenage female high school pupil, using a tablet and sitting on steps in the school grounds — Stock Photo
    Front view close up of a Caucasian teenage female high school pupil, using a tablet and sitting on steps in the school grounds
    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
    Front view close up of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and using tablet computer, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Front view close up of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and using tablet computer, with teenage male and female classmates sitting at desks working in the background
    Junior high school students participating with hands raised in classroom — Stock Photo
    Junior high school students participating with hands raised in classroom
    Male teacher teaching students in the class at school — Stock Photo
    Male teacher teaching students in the class at school
    Teenagers playing pool indoors — Stock Photo
    Teenagers playing pool indoors
    Young woman using tablet computer while studying at desk with classmates at desk in classroom — Stock Photo
    Young woman using tablet computer while studying at desk with classmates at desk in classroom
    High school students with hands raised in debate class — Stock Photo
    High school students with hands raised in debate class
    Serious boy student holding molecular structure in classroom — Stock Photo
    Serious boy student holding molecular structure in classroom
    Schoolboy writing on chalkboard in classroom at school — Stock Photo
    Schoolboy writing on chalkboard in classroom at school
    Junior high students leaving school building, descending steps — Stock Photo
    Junior high students leaving school building, descending steps
    Junior high school girl student using digital tablets at desk in classroom — Stock Photo
    Junior high school girl student using digital tablets at desk in classroom
    Portrait enthusiastic junior high girl students waving on steps — Stock Photo
    Portrait enthusiastic junior high girl students waving on steps
    Focused junior high school student using digital tablet in classroom — Stock Photo
    Focused junior high school student using digital tablet in classroom
    Male teacher leading lesson at projection screen in classroom — Stock Photo
    Male teacher leading lesson at projection screen in classroom
    Schoolkids studying in the classroom at school — Stock Photo
    Schoolkids studying in the classroom at school
    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
    France, drawer with numerous compartments containing lead letters used for old printing — Stock Photo
    France, drawer with numerous compartments containing lead letters used for old printing