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    Girl students using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students using microscope, conducting scientific experiment in laboratory classroom
    Portrait confident young man outside sunny building — Stock Photo
    Portrait confident young man outside sunny building
    Side view of a Caucasian female field hockey players, preparing before a game, standing in a changing room, wearing a hockey helmet, with her teammates standing in a row behind her — Stock Photo
    Side view of a Caucasian female field hockey players, preparing before a game, standing in a changing room, wearing a hockey helmet, with her teammates standing in a row behind her
    Smiling teacher talking to high school students on street — Stock Photo
    Smiling teacher talking to high school students on street
    Bleachers at high school grassy sports field — Stock Photo
    Bleachers at high school grassy sports field
    Teenagers playing pool indoors — Stock Photo
    Teenagers playing pool indoors
    Male teacher helping junior high school students at desk in classroom — Stock Photo
    Male teacher helping junior high school students at desk in classroom
    Focused boy students using digital tablet at microscope in laboratory classroom — Stock Photo
    Focused boy students using digital tablet at microscope in laboratory 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
    Portrait confident young male college student in library — Stock Photo
    Portrait confident young male college student in library
    Distance Learning School and Travel Completing Assignments on the Road — Stock Photo
    Distance Learning School and Travel Completing Assignments on the Road
    Eager junior high school students with hands raised in classroom — Stock Photo
    Eager junior high school students with hands raised in classroom
    Young women friends using smart phone — Stock Photo
    Young women friends using smart phone
    High school teacher supervising students taking exam desks classroom — Stock Photo
    High school teacher supervising students taking exam desks classroom
    Female students analyzing results of experiments — Stock Photo
    Female students analyzing results of experiments
    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
    College students talking and studying together — Stock Photo
    College students talking and studying together
    Mother walking with daughter and son on a cactus path. — Stock Photo
    Mother walking with daughter and son on a cactus path.
    Rear view of a Caucasian teenage boy standing in the auditorium directing a teenage girl on stage in an empty school theatre during rehearsals for a performance — Stock Photo
    Rear view of a Caucasian teenage boy standing in the auditorium directing a teenage girl on stage in an empty school theatre during rehearsals for a performance
    High angle view of a multi-ethnic group of teenage school pupils sitting and standing around a table in a classroom using laptop and tablet computers together at break time looking up to camera and smiling — Stock Photo
    High angle view of a multi-ethnic group of teenage school pupils sitting and standing around a table in a classroom using laptop and tablet computers together at break time looking up to camera and smiling
    Rear view of a Caucasian woman conductor directing a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Rear view of a Caucasian woman conductor directing a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance
    Side view of a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view of a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance
    Side view close up of a Caucasian female conductor directing a group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view close up of a Caucasian female conductor directing a group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance
    Teacher and students reading in classroom — Stock Photo
    Teacher and students reading in classroom
    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
    High school boy student with hand raised during lesson in classroom — Stock Photo
    High school boy student with hand raised during lesson in classroom
    Focused high school students taking exam at desks in classroom — Stock Photo
    Focused high school students taking exam at desks in classroom
    Teacher helping junior high students using computer in computer lab — Stock Photo
    Teacher helping junior high students using computer in computer lab
    Side view close up of a Caucasian teenage girl sitting in front of a window playing a flute, selective focus — Stock Photo
    Side view close up of a Caucasian teenage girl sitting in front of a window playing a flute, selective focus
    Junior high school students studying at desk in classroom — Stock Photo
    Junior high school students studying at desk in classroom
    Students and teacher drawing in classroom — Stock Photo
    Students and teacher drawing 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 strength exercises , 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 strength exercises , on a sunny day
    Student holding globe in classroom — Stock Photo
    Student holding globe in classroom
    Smiling college students talking in corridor — Stock Photo
    Smiling college students talking in corridor
    Side view of a Caucasian female field hockey player, during a field hockey game, executing a penalty kick, with a goal protected by a goalkeeper in the background, on a sunny day — Stock Photo
    Side view of a Caucasian female field hockey player, during a field hockey game, executing a penalty kick, with a goal protected by a goalkeeper in the background, on a sunny day
    Portrait confident teenage boy student in shop class — Stock Photo
    Portrait confident teenage boy student in shop class
    Man drinking coffee on city street — Stock Photo
    Man drinking coffee on city street
    Mother hugging son in front of a big cactus with back light sun. — Stock Photo
    Mother hugging son in front of a big cactus with back light sun.
    Dedicated high school boy student taking exam at desk in classroom — Stock Photo
    Dedicated high school boy student taking exam at desk in classroom
    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
    Portrait confident junior high girl student in library — Stock Photo
    Portrait confident junior high girl student in library
    Female science teacher and students in laboratory classroom — Stock Photo
    Female science teacher and students in laboratory classroom
    Portrait confident smiling college students — Stock Photo
    Portrait confident smiling college students
    Teacher explaining material — Stock Photo
    Teacher explaining material
    Female teacher and curious girl students examining molecular structure in laboratory classroom — Stock Photo
    Female teacher and curious girl students examining molecular structure in laboratory classroom
    Side view a Caucasian male high school teacher, standing at the front of a class, talking to a multi-ethnic group of teenagers in a school classroom sitting at desks in rows, listening — Stock Photo
    Side view a Caucasian male high school teacher, standing at the front of a class, talking to a multi-ethnic group of teenagers in a school classroom sitting at desks in rows, listening
    Smiling male teacher leading lesson in classroom — Stock Photo
    Smiling male teacher leading lesson in classroom
    Curious junior high school student looking at map on computer in classroom — Stock Photo
    Curious junior high school student looking at map on computer in classroom
    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
    Focused high school girl student taking exam at desk in classroom — Stock Photo
    Focused high school girl student taking exam at desk in classroom
    Happy young male basketball players hugging and celebrating after victory — Stock Photo
    Happy young male basketball players hugging and celebrating after victory
    Young female college student studying in cafe — Stock Photo
    Young female college student studying in cafe
    Junior high students leaving school building, descending steps — Stock Photo
    Junior high students leaving school building, descending steps
    Aerial view of Wuming Buddhist College at night of Seda County, Sichuan province, China — Stock Photo
    Aerial view of Wuming Buddhist College at night of Seda County, Sichuan province, China
    Girl student conducting scientific experiment in laboratory classroom — Stock Photo
    Girl student conducting scientific experiment in laboratory classroom
    Happy schoolboy sitting at desk — Stock Photo
    Happy schoolboy sitting at desk
    Portrait smiling high school girl in stairway — Stock Photo
    Portrait smiling high school girl in stairway
    Female high school teacher helping girl student with homework in classroom — Stock Photo
    Female high school teacher helping girl student with homework in classroom
    Junior high students using computers in computer lab — Stock Photo
    Junior high students using computers in computer lab
    Two handsome teenage boys sitting on the wall repairing a skateboard — Stock Photo
    Two handsome teenage boys sitting on the wall repairing a skateboard