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    Male high school teacher leading lesson at projection screen in classroom — Stock Photo
    Male high school teacher leading lesson at projection screen in classroom
    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, with their hands behind their backs, 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, with their hands behind their backs, looking to camera on a sunny day
    Side view of a multi-ethnic group of high school teenage male and female school pupils in a classroom, working on computers and concentrating — Stock Photo
    Side view of a multi-ethnic group of high school teenage male and female school pupils in a classroom, working on computers and concentrating
    Teenage girl operating video camera, vlogging — Stock Photo
    Teenage girl operating video camera, vlogging
    Front view of a multi-ethnic group of male field hockey players, training before a game, working out on a field hockey pitch, running on a sunny day — Stock Photo
    Front view of a multi-ethnic group of male field hockey players, training before a game, working out on a field hockey pitch, running on a sunny day
    Man in tuxedo suit standing outdoor — Stock Photo
    Man in tuxedo suit standing outdoor
    Junior high school students pointing at globe in geography teacher hands — Stock Photo
    Junior high school students pointing at globe in geography teacher hands
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria. — Stock Photo
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria.
    Male teacher teaching students in the classroom at school — Stock Photo
    Male teacher teaching students in the classroom at school
    Focused students using computer in dark classroom — Stock Photo
    Focused students using computer in dark classroom
    Teenage girl holding clipboard while practicing experiment in lab — Stock Photo
    Teenage girl holding clipboard while practicing experiment in lab
    Junior high school students listening in classroom — Stock Photo
    Junior high school students listening in classroom
    Teenage female practicing chemistry experiment in lab — Stock Photo
    Teenage female practicing chemistry experiment in lab
    Junior high school girl student using computer in classroom — Stock Photo
    Junior high school girl student using computer 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.
    Side view of a multi-ethnic group of teenage male field hockey players, training before a game, working out with their coach on a field hockey pitch, running on a sunny day — Stock Photo
    Side view of a multi-ethnic group of teenage male field hockey players, training before a game, working out with their coach on a field hockey pitch, running on a sunny day
    Front view of a teenage Caucasian boy sitting a desk looking ahead and concentrating in a school classroom, with a row of teenage female classmates sitting at desks behind him — Stock Photo
    Front view of a teenage Caucasian boy sitting a desk looking ahead and concentrating in a school classroom, with a row of teenage female classmates sitting at desks behind him
    Portrait happy, confident junior female students — Stock Photo
    Portrait happy, confident junior female students
    Side view of a Caucasian teenage boy sitting on the edge of the stage holding a script in an empty school theatre during rehearsals for a performance — Stock Photo
    Side view of a Caucasian teenage boy sitting on the edge of the stage holding a script in an empty school theatre during rehearsals for a performance
    Portrait smiling, confident junior high school girl in classroom — Stock Photo
    Portrait smiling, confident junior high school girl in classroom
    Girl student examining and touching molecular structure in classroom — Stock Photo
    Girl student examining and touching molecular structure in classroom
    Portrait playful girl student holding molecular structure on head at microscope in laboratory classroom — Stock Photo
    Portrait playful girl student holding molecular structure on head at microscope in laboratory 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.
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory — Stock Photo
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory
    Junior high school boy opening notebook at desk in classroom — Stock Photo
    Junior high school boy opening notebook at desk in classroom
    High school students with hands raised during lesson in classroom — Stock Photo
    High school students with hands raised during lesson in classroom
    Junior high school students using virtual reality simulators in classroom — Stock Photo
    Junior high school students using virtual reality simulators in classroom
    Rear view of a group of female Caucasian field hockey players, preparing before a game, standing in a row embracing with hands on their teammates shoulders, 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 with hands on their teammates shoulders, on a sunny day
    Smiling female science teacher leading lesson at whiteboard in classroom — Stock Photo
    Smiling female science teacher leading lesson at whiteboard in classroom
    Students working at computers in laboratory — Stock Photo
    Students working at computers in laboratory
    Portrait confident female high school teacher at projection screen in classroom — Stock Photo
    Portrait confident female high school teacher at projection screen in classroom
    Side view of a Caucasian teenage girl sitting at a desk in a school classroom leaning on her desk and smiling at a teenage boy sitting at the best desk, using a laptop and smiling back at her — Stock Photo
    Side view of a Caucasian teenage girl sitting at a desk in a school classroom leaning on her desk and smiling at a teenage boy sitting at the best desk, using a laptop and smiling back at her
    Junior high students using computer in computer lab — Stock Photo
    Junior high students using computer in computer lab
    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
    Female teacher and girl students using laptop in classroom — Stock Photo
    Female teacher and girl students using laptop in classroom
    Sri Lanka. Mirissa, planting cinnamon. Cinnamon is the inner bark of the cinnamon tree. Artisanal preparation of cinnamon stick. — Stock Photo
    Sri Lanka. Mirissa, planting cinnamon. Cinnamon is the inner bark of the cinnamon tree. Artisanal preparation of cinnamon stick.
    Male teacher at touch screen leading lesson in classroom — Stock Photo
    Male teacher at touch screen leading lesson in classroom
    Portrait of a Caucasian musician young pretty teenage girl sitting by a window playing the violin in a high school — Stock Photo
    Portrait of a Caucasian musician young pretty teenage girl sitting by a window playing the violin in a high school
    Front view of a group of female Caucasian field hockey players preparing before a game, sitting on a stand, holding hockey sticks, with their Caucasian male field hockey coach standing in front of them, talking about game plan on a sunny day — Stock Photo
    Front view of a group of female Caucasian field hockey players preparing before a game, sitting on a stand, holding hockey sticks, with their Caucasian male field hockey coach standing in front of them, talking about game plan on a sunny day
    Digital molecular model of secondary structure of immunoglobulin G antibody. — Stock Photo
    Digital molecular model of secondary structure of immunoglobulin G antibody.
    Students writing their GCSE exam in classroom — Stock Photo
    Students writing their GCSE exam in classroom
    Portrait confident african american boy playing basketball in schoolyard — Stock Photo
    Portrait confident african american boy playing basketball in schoolyard
    Teenage girls reading book while standing in library seen through glass — Stock Photo
    Teenage girls reading book while standing in library seen through glass
    Teenagers playing pool indoors — Stock Photo
    Teenagers playing pool indoors
    Digital molecular model of secondary structure of immunoglobulin G antibodies. — Stock Photo
    Digital molecular model of secondary structure of immunoglobulin G antibodies.
    Girl student examining pink liquid, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl student examining pink liquid, conducting scientific experiment in laboratory classroom
    Human ovary structure — Stock Photo
    Human ovary structure
    Portrait smiling, confident junior high teachers in library — Stock Photo
    Portrait smiling, confident junior high teachers in library
    Rear view of a multi-ethnic group of teenage male and female school pupils with schoolbags hanging out, walking in their high school grounds, one carrying a skateboard — Stock Photo
    Rear view of a multi-ethnic group of teenage male and female school pupils with schoolbags hanging out, walking in their high school grounds, one carrying a skateboard
    Young college students practicing chemistry experiment in lab — Stock Photo
    Young college students practicing chemistry experiment in lab
    Front view of a high school teenage Caucasian boy and teenage mixed race boy in a school classroom sitting a desk, working together, writing and reading in their books, with teenage male and female classmates — Stock Photo
    Front view of a high school teenage Caucasian boy and teenage mixed race boy in a school classroom sitting a desk, working together, writing and reading in their books, with teenage male and female classmates
    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
    Side view of a multi-ethnic group of teenage male field hockey players and their Caucasian field hockey coach, training before a game, working out on a field hokey pitch, doing sit ups with their coach on a sunny day — Stock Photo
    Side view of a multi-ethnic group of teenage male field hockey players and their Caucasian field hockey coach, training before a game, working out on a field hokey pitch, doing sit ups with their coach on a sunny day
    Junior high students leaving school building, descending steps — Stock Photo
    Junior high students leaving school building, descending steps
    Schoolkids studying in the classroom at school — Stock Photo
    Schoolkids studying in the classroom at school
    Smiling male teacher and students programming robotics at laptop in classroom — Stock Photo
    Smiling male teacher and students programming robotics at laptop in classroom
    University students practicing science experiment in lab — Stock Photo
    University students practicing science experiment in lab
    Junior high school boy student doing homework in classroom — Stock Photo
    Junior high school boy student doing homework in classroom
    Portrait smiling, confident girl student programming at computer in classroom — Stock Photo
    Portrait smiling, confident girl student programming at computer in classroom
    Side view of a multi-ethnic group of male and female teenager students sitting on a wall talking and using tablet computers in their school grounds — Stock Photo
    Side view of a multi-ethnic group of male and female teenager students sitting on a wall talking and using tablet computers in their school grounds