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    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
    Students writing their GCSE exam in classroom — Stock Photo
    Students writing their GCSE exam in classroom
    Front view close up of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and writing, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Front view close up of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and writing, with teenage male and female classmates sitting at desks working in the background
    Male teacher teaching students in the classroom at school — Stock Photo
    Male teacher teaching students in the classroom at school
    Male teacher helping junior high school student using digital tablet in classroom — Stock Photo
    Male teacher helping junior high school student using digital tablet in classroom
    High school students studying at tables in classroom — Stock Photo
    High school students studying at tables in classroom
    Teenagers playing pool indoors — Stock Photo
    Teenagers playing pool indoors
    Students talking at table in library — Stock Photo
    Students talking at table in library
    High school students and teacher clapping debate class — Stock Photo
    High school students and teacher clapping debate class
    Students studying in the classroom at school — Stock Photo
    Students studying in the classroom at school
    Elegant wedding rings on table — Stock Photo
    Elegant wedding rings on table
    Close-up of teenage girl using microscope in lab — Stock Photo
    Close-up of teenage girl using microscope in lab
    Male teacher teaching students in the class at school — Stock Photo
    Male teacher teaching students in the class at school
    Curious boy examining molecule model in laboratory classroom — Stock Photo
    Curious boy examining molecule model in laboratory classroom
    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
    Group portrait of schoolchildren wearing school uniforms standing in corridor and smiling — Stock Photo
    Group portrait of schoolchildren wearing school uniforms standing in corridor and smiling
    Front view of a teenage Caucasian girl in a school classroom sitting at desk, with her head leaning on her hand, looking away, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Front view of a teenage Caucasian girl in a school classroom sitting at desk, with her head leaning on her hand, looking away, with teenage male and female classmates sitting at desks working in the background
    Side view of a male Caucasian teacher standing and talking with a teenage Caucasian girl working on a computer and concentrating in a classroom, with teenage male and female classmates sitting at desks working in the background and foreground — Stock Photo
    Side view of a male Caucasian teacher standing and talking with a teenage Caucasian girl working on a computer and concentrating in a classroom, with teenage male and female classmates sitting at desks working in the background and foreground
    Curious students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Curious students watching chemical reaction, conducting scientific experiment in laboratory classroom
    High school students watching teacher leading lesson at whiteboard in classroom — Stock Photo
    High school students watching teacher leading lesson at whiteboard in classroom
    Male teacher teaching students in the classroom at school — Stock Photo
    Male teacher teaching students in the classroom at school
    Junior high school students participating with hands raised in classroom — Stock Photo
    Junior high school students participating with hands raised in classroom
    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.
    High school teacher leading lesson, calling on students with arms raised in classroom — Stock Photo
    High school teacher leading lesson, calling on students with arms raised in classroom
    Male teacher supervising students writing their GCSE exam in classroom — Stock Photo
    Male teacher supervising students writing their GCSE exam in classroom
    High school students with hands raised asking questions during lesson in classroom — Stock Photo
    High school students with hands raised asking questions during lesson in classroom
    Side view of a group of female Caucasian field hockey players, preparing before a game, huddling, interacting, motivating, bending down, on a sunny day — Stock Photo
    Side view of a group of female Caucasian field hockey players, preparing before a game, huddling, interacting, motivating, bending down, on a sunny day
    Schoolkids studying in the classroom at school — Stock Photo
    Schoolkids studying in the classroom at school
    Students using laptop in the classroom at school — Stock Photo
    Students using laptop in the classroom at school
    Junior high school boy opening notebook at desk in classroom — Stock Photo
    Junior high school boy opening notebook at desk in classroom
    Junior high school boys using digital tablet in classroom — Stock Photo
    Junior high school boys using digital tablet in classroom
    Coloured X-ray of the chest of a 52 year old female patient with metastatic (secondary) lung cancer (yellow). — Stock Photo
    Coloured X-ray of the chest of a 52 year old female patient with metastatic (secondary) lung cancer (yellow).
    Teacher helping junior high school students at desk in classroom — Stock Photo
    Teacher helping junior high school students at desk in classroom
    Girl students conducting scientific experiment in chemistry laboratory classroom — Stock Photo
    Girl students conducting scientific experiment in chemistry laboratory classroom
    Junior high school students using virtual reality simulators in classroom — Stock Photo
    Junior high school students using virtual reality simulators in classroom
    Side view close up of multi-ethnic group of smiling high school teenagers in a school classroom sitting at desks, all raising their hands to answer a question — Stock Photo
    Side view close up of multi-ethnic group of smiling high school teenagers in a school classroom sitting at desks, all raising their hands to answer a question
    Teenagers playing pool in community center — Stock Photo
    Teenagers playing pool in community center
    Teenage female student using digital tablet in desk in classroom — Stock Photo
    Teenage female student using digital tablet in desk in classroom
    Side view of a Caucasian teenage girl in an empty high school theatre, sitting in the auditorium preparing for a performance, holding a script and learning lines — Stock Photo
    Side view of a Caucasian teenage girl in an empty high school theatre, sitting in the auditorium preparing for a performance, holding a script and learning lines
    Smiling male teacher leading lesson in classroom — Stock Photo
    Smiling male teacher leading lesson in classroom
    Close up of young female college student looking at chemical while practicing experiment in lab — Stock Photo
    Close up of young female college student looking at chemical while practicing experiment in lab
    Girl students using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students using microscope, conducting scientific experiment in laboratory classroom
    Empty seats in a school theatre auditorium, with the house lights on in a high school — Stock Photo
    Empty seats in a school theatre auditorium, with the house lights on in a high school
    Portrait of confident teachers in library with students — Stock Photo
    Portrait of confident teachers in library with students
    Secondary liver cancer — Stock Photo
    Secondary liver cancer
    France, Limousin, sheep in the countryside. — Stock Photo
    France, Limousin, sheep in the countryside.
    Side view of a Caucasian musician teenage girl sitting by a window playing a ukulele alone in a high school — Stock Photo
    Side view of a Caucasian musician teenage girl sitting by a window playing a ukulele alone in a high school
    Side view of a Caucasian male field hockey coach interacting with a group of female Caucasian field hockey players, sitting in a changing room, showing them a game plan — Stock Photo
    Side view of a Caucasian male field hockey coach interacting with a group of female Caucasian field hockey players, sitting in a changing room, showing them a game plan
    Junior high school students using virtual reality simulators in classroom — Stock Photo
    Junior high school students using virtual reality simulators in classroom
    Teenagers playing pool in community center — Stock Photo
    Teenagers playing pool in community center
    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 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 — Stock Photo
    Front 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
    Portrait happy, confident junior female students — Stock Photo
    Portrait happy, confident junior female students
    Smiling female university students studying at desk in classroom — Stock Photo
    Smiling female university students studying at desk in classroom
    High angle front view of a teenage mixed race male field hockey player, lying down on a field hokey pitch, resting, focusing before a game on a sunny day — Stock Photo
    High angle front view of a teenage mixed race male field hockey player, lying down on a field hokey pitch, resting, focusing before a game on a sunny day
    Side view of a group of female Caucasian field hockey players, preparing before a game, concentrating, motivating, huddling, on a sunny day — Stock Photo
    Side view of a group of female Caucasian field hockey players, preparing before a game, concentrating, motivating, huddling, on a sunny day
    Side view of a teenage Caucasian girl in a school classroom sitting at her desk with her head on her arms, sleeping, 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 her desk with her head on her arms, sleeping, with teenage male and female classmates sitting at desks working in the background
    High school boy student with hand raised during lesson in classroom — Stock Photo
    High school boy student with hand raised during lesson in classroom
    Male teacher using digital tablet with students in classroom at school — Stock Photo
    Male teacher using digital tablet with students in classroom at school
    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, talking and smiling — 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, talking and smiling