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    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
    Focused girl student programming robotics at laptop in classroom — Stock Photo
    Focused girl student programming robotics at laptop in classroom
    High school girl student raising hand, asking question during lesson in classroom — Stock Photo
    High school girl student raising hand, asking question during lesson in classroom
    Front view of two Caucasian teenage boys and a mixed race teenage girl in discussion, holding scripts and smiling in the auditorium of an empty school theatre during rehearsals for a performance — Stock Photo
    Front view of two Caucasian teenage boys and a mixed race teenage girl in discussion, holding scripts and smiling in the auditorium of an empty school theatre during rehearsals for a performance
    Portrait smiling, enthusiastic junior high school girl student with braces in classroom — Stock Photo
    Portrait smiling, enthusiastic junior high school girl student with braces in classroom
    Ovarian cells section — Stock Photo
    Ovarian cells section
    Junior high students using computer in computer lab — Stock Photo
    Junior high students using computer in computer lab
    Front view of a multi-ethnic team of teenage male field hockey players preparing before a game, standing on the pitch in a row, wearing their team strip, holding their hockey sticks, looking to camera on a sunny day — Stock Photo
    Front view of a multi-ethnic team of teenage male field hockey players preparing before a game, standing on the pitch in a row, wearing their team strip, holding their hockey sticks, looking to camera on a sunny day
    Close up of human hands holding shining garland — Stock Photo
    Close up of human hands holding shining garland
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria. — Stock Photo
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria.
    Teenage girl wearing safety glasses while practicing science experiment in lab — Stock Photo
    Teenage girl wearing safety glasses while practicing science experiment in lab
    Schoolkids holding sketch pens in classroom at school — Stock Photo
    Schoolkids holding sketch pens in classroom at school
    Side view of a group of female Caucasian field hockey players, training before a game, working out on a field hockey pitch, exercising, stretching their arms, 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, exercising, stretching their arms, on a sunny day
    Side view of a multi-ethnic group of teenage male field hockey players, on the pitch, holding their hockey sticks and embracing, celebrating a victory on a sunny day — Stock Photo
    Side view of a multi-ethnic group of teenage male field hockey players, on the pitch, holding their hockey sticks and embracing, celebrating a victory on a sunny day
    Focused junior high school boy with headphones in classroom — Stock Photo
    Focused junior high school boy with headphones in classroom
    Over the shoulder 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 — Stock Photo
    Over the shoulder 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
    Female student sitting alone in classroom during GCSE exam — Stock Photo
    Female student sitting alone in classroom during GCSE exam
    Boy student using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Boy student using microscope, conducting scientific experiment in laboratory classroom
    Male teacher teaching students in the classroom at school — Stock Photo
    Male teacher teaching students in the classroom at school
    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
    Digital illustration of solid node in right lung near lung apex while secondary tuberculosis infection. — Stock Photo
    Digital illustration of solid node in right lung near lung apex while secondary tuberculosis infection.
    Front view of a Caucasian female field hockey goalkeeper and a Caucasian male field hockey coach preparing before a game, standing in a changing room, discussing game plan, with other hockey players standing in a row behind them — Stock Photo
    Front view of a Caucasian female field hockey goalkeeper and a Caucasian male field hockey coach preparing before a game, standing in a changing room, discussing game plan, with other hockey players standing in a row behind them
    Happy, laughing junior high school students in classroom — Stock Photo
    Happy, laughing junior high school students in classroom
    Tween boys playing basketball in schoolyard — Stock Photo
    Tween boys playing basketball in schoolyard
    Male teacher helping girl student at microscope in laboratory classroom — Stock Photo
    Male teacher helping girl student at microscope in laboratory classroom
    Portrait of a Caucasian musician teenage girl sitting by a window, looking down and playing a ukulele in a high school — Stock Photo
    Portrait of a Caucasian musician teenage girl sitting by a window, looking down and playing a ukulele in a high school
    Portrait close up of a Caucasian musician teenage girl sitting by a window playing the violin in a high school — Stock Photo
    Portrait close up of a Caucasian musician teenage girl sitting by a window playing the violin in a high school
    High school students with hands raised in classroom — Stock Photo
    High school students with hands raised in classroom
    Girl students using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students using microscope, conducting scientific experiment in laboratory classroom
    Male teacher helping junior high school students at desk in classroom — Stock Photo
    Male teacher helping junior high school students at desk in classroom
    Junior high school boy student doing homework in classroom — Stock Photo
    Junior high school boy student doing homework in classroom
    Front view of a multi-ethnic group of male and female teenager students talking as they walk through their school grounds — Stock Photo
    Front view of a multi-ethnic group of male and female teenager students talking as they walk through their school grounds
    Secondary brain cancer — Stock Photo
    Secondary brain cancer
    Portrait close up of a Caucasian teenage boy sitting by a window holding an acoustic guitar and looking to camera in a high school — Stock Photo
    Portrait close up of a Caucasian teenage boy sitting by a window holding an acoustic guitar and looking to camera in a high school
    Front view of a Caucasian male high school teacher, standing and talking with a teenage Caucasian girl in a school classroom sitting at desk, with teenage classmates sitting at desks working in the background — Stock Photo
    Front view of a Caucasian male high school teacher, standing and talking with a teenage Caucasian girl in a school classroom sitting at desk, with teenage classmates sitting at desks working in the background
    Boy playing table tennis — Stock Photo
    Boy playing table tennis
    Central Asia, Kyrgyzstan, Issyk Kul Province (Ysyk-K?l), Juuku valley, the shepherd Gengibek Makanbietov leads his 24 horses in the mountains pasture — Stock Photo
    Central Asia, Kyrgyzstan, Issyk Kul Province (Ysyk-K?l), Juuku valley, the shepherd Gengibek Makanbietov leads his 24 horses in the mountains pasture
    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
    Girl students studying at computers in library — Stock Photo
    Girl students studying at computers in library
    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
    Male science teacher and students conducting scientific experiment in laboratory classroom — Stock Photo
    Male science teacher and students conducting scientific experiment in laboratory classroom
    Portrait confident junior high school girl student doing homework in classroom — Stock Photo
    Portrait confident junior high school girl student doing homework in classroom
    Front view of a multi-ethnic group of teenagers in discussion, holding scripts and smiling in the auditorium of an empty school theatre during rehearsals for a performance — Stock Photo
    Front view of a multi-ethnic group of teenagers in discussion, holding scripts and smiling in the auditorium of an empty school theatre during rehearsals for a performance
    Eager junior high school students with hands raised in classroom — Stock Photo
    Eager junior high school students with hands raised 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 push ups, 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 push ups, on a sunny day
    Side view of a mixed race male field hockey player, training on a field hockey pitch before a game, kneeling and trying to hit a ball with a hockey stick, with his teammates in the background on a sunny day — Stock Photo
    Side view of a mixed race male field hockey player, training on a field hockey pitch before a game, kneeling and trying to hit a ball with a hockey stick, with his teammates in the background on a sunny day
    Girl students assembling robotics in classroom — Stock Photo
    Girl students assembling robotics in classroom
    Low angle side view of a multi-ethnic group of teenage male field hockey players training before a game with their Caucasian male field hockey coach, working out on a field hockey pitch, doing sit ups in a circle on a sunny day — Stock Photo
    Low angle side view of a multi-ethnic group of teenage male field hockey players training before a game with their Caucasian male field hockey coach, working out on a field hockey pitch, doing sit ups in a circle on a sunny day
    Junior high school students studying in classroom — Stock Photo
    Junior high school students studying in classroom
    Side view close up of a teenage mixed-race boy 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 close up of a teenage mixed-race boy in a school classroom sitting at desk, concentrating, with teenage male and female classmates sitting at desks working in the background
    Eager, smiling students raising hands in science laboratory classroom — Stock Photo
    Eager, smiling students raising hands in science laboratory classroom
    Portrait from above of enthusiastic junior high students and teachers cheering — Stock Photo
    Portrait from above of enthusiastic junior high students and teachers cheering
    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
    Portrait of smiling, confident junior high school students studying in classroom — Stock Photo
    Portrait of smiling, confident junior high school students studying in classroom
    Female students reading book while standing by shelf in library — Stock Photo
    Female students reading book while standing by shelf in library
    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 close up of a Caucasian teenage boy with dark hair and grey eyes sitting at a desk in a school classroom wearing headphones and looking at of a window — 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 and looking at of a window
    Junior high students walking around smiling female teacher — Stock Photo
    Junior high students walking around smiling female teacher
    Surprised students conducting exploding foam scientific experiment in classroom laboratory — Stock Photo
    Surprised students conducting exploding foam scientific experiment in classroom laboratory
    Teenage girl operating video camera, vlogging — Stock Photo
    Teenage girl operating video camera, vlogging