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    Side view of a Caucasian male high school teacher, standing and talking with a multi-ethnic group of female high school students in a school classroom sitting at a desk — Stock Photo
    Side view of a Caucasian male high school teacher, standing and talking with a multi-ethnic group of female high school students in a school classroom sitting at a desk
    Junior high school student raising hand, asking a question during lesson in classroom — Stock Photo
    Junior high school student raising hand, asking a question during lesson in classroom
    Portrait smiling high school girl in stairway — Stock Photo
    Portrait smiling high school girl in stairway
    Girl students using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students using microscope, conducting scientific experiment in laboratory classroom
    High school girl students studying in classroom — Stock Photo
    High school girl students studying in classroom
    Schoolboy using digital tablet in classroom at school — Stock Photo
    Schoolboy using digital tablet in classroom at school
    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
    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 multi-ethnic group of teenage male field hockey players preparing before a game, in a huddle on the pitch, interacting on a sunny day — Stock Photo
    Front view of a multi-ethnic group of teenage male field hockey players preparing before a game, in a huddle on the pitch, interacting on a sunny day
    Side view of a Caucasian female director and a multi-ethnic group of teenage male and female choristers standing opposite each other holding sheet music and singing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view of a Caucasian female director and a multi-ethnic group of teenage male and female choristers standing opposite each other holding sheet music and singing on the stage of a school theatre during rehearsals for a performance
    High school girl student doing homework at table in classroom — Stock Photo
    High school girl student doing homework at table in classroom
    Portrait of confident junior high student — Stock Photo
    Portrait of confident junior high student
    Junior high students with backpacks walking in school corridor — Stock Photo
    Junior high students with backpacks walking in school corridor
    Smiling junior high school students listening in classroom lesson — Stock Photo
    Smiling junior high school students listening in classroom lesson
    France, Southern France, Vileveyrac, Cistercian abbey of Holy Mary of Valmagne, 13th century, gothic style, nave nave turned into a wine storehouse after the Revolution — Stock Photo
    France, Southern France, Vileveyrac, Cistercian abbey of Holy Mary of Valmagne, 13th century, gothic style, nave nave turned into a wine storehouse after the Revolution
    Junior high students leaving school building, descending steps — Stock Photo
    Junior high students leaving school building, descending steps
    Teenage girl using tablet while standing in lab — Stock Photo
    Teenage girl using tablet while standing in lab
    Portrait of a Caucasian female field hockey player, preparing before a game, standing on a hockey pitch, looking at camera, holding a hockey stick on her shoulders, with her teammates standing in the background on a sunny day — Stock Photo
    Portrait of a Caucasian female field hockey player, preparing before a game, standing on a hockey pitch, looking at camera, holding a hockey stick on her shoulders, with her teammates standing in the background on a sunny day
    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
    Front view of a mixed race teenage girl sitting at a desk in a classroom and raising their hands, her classmates also raising their hands in the background — Stock Photo
    Front view of a mixed race teenage girl sitting at a desk in a classroom and raising their hands, her classmates also raising their hands in the background
    Female teacher helping students working at computers in computer lab classroom — Stock Photo
    Female teacher helping students working at computers in computer lab classroom
    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
    Boy playing table tennis — Stock Photo
    Boy playing table tennis
    Portrait of confident elementary age boy doing homework in classroom — Stock Photo
    Portrait of confident elementary age boy doing homework in classroom
    Junior high school students in classroom — Stock Photo
    Junior high school students in classroom
    Portrait of smiling, confident junior high school student using digital tablet in classroom — Stock Photo
    Portrait of smiling, confident junior high school student using digital tablet in classroom
    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
    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
    Male teacher using laptop with students in the classroom at school — Stock Photo
    Male teacher using laptop with students in the classroom at school
    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
    Schoolkids walking in school campus on a sunny day — Stock Photo
    Schoolkids walking in school campus on a sunny day
    Portrait of female student with arms crossed standing in lab — Stock Photo
    Portrait of female student with arms crossed standing in lab
    High school students doing arts and crafts — Stock Photo
    High school students doing arts and crafts
    Portrait smiling girl student sitting in classroom during lesson — Stock Photo
    Portrait smiling girl student sitting in classroom during lesson
    Side view close up 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 close up 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
    Portrait of smiling, confident junior high student using computer in computer lab — Stock Photo
    Portrait of smiling, confident junior high student using computer in computer lab
    Portrait of a Caucasian female field hockey players, preparing before a game, standing in a changing room, with her teammates standing in a row behind her — Stock Photo
    Portrait of a Caucasian female field hockey players, preparing before a game, standing in a changing room, with her teammates standing in a row behind her
    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
    Curious girl students conducting scientific experiment in laboratory classroom — Stock Photo
    Curious girl students conducting scientific experiment in laboratory classroom
    Side view of a Caucasian teenage schoolboy sitting at a desk in class by a window using a smartphone and concentrating — Stock Photo
    Side view of a Caucasian teenage schoolboy sitting at a desk in class by a window using a smartphone and concentrating
    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 female teacher — Stock Photo
    Portrait of smiling, confident female teacher
    Front view 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 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
    Portrait confident junior high school boy student doing homework in classroom — Stock Photo
    Portrait confident junior high school boy student doing homework in classroom
    University students practicing science experiment in lab — Stock Photo
    University students practicing science experiment in lab
    Front view of two Caucasian teenage female school pupils with schoolbags hanging out, walking and looking at a smartphone together in their high school grounds, with classmates hanging out in the background — Stock Photo
    Front view of two Caucasian teenage female school pupils with schoolbags hanging out, walking and looking at a smartphone together in their high school grounds, with classmates hanging out in the background
    Junior high school boy opening notebook at desk in classroom — Stock Photo
    Junior high school boy opening notebook at desk in classroom
    Female university student using digital tablet while studying at desk in classroom — Stock Photo
    Female university student using digital tablet while studying at desk 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
    Girl students using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students using microscope, conducting scientific experiment in laboratory classroom
    Side view close up of two Caucasian teenage girls with long dark hair sitting in front of a window playing a flute and a ukulele — Stock Photo
    Side view close up of two Caucasian teenage girls with long dark hair sitting in front of a window playing a flute and a ukulele
    Male teacher and students conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher and students conducting scientific experiment in laboratory classroom
    Portrait close up of a confident mixed race male field hockey player, wearing a red team strip, standing on a hockey pitch looking to camera on a sunny day — Stock Photo
    Portrait close up of a confident mixed race male field hockey player, wearing a red team strip, standing on a hockey pitch looking to camera on a sunny day
    High school students talking and studying at table in classroom — Stock Photo
    High school students talking and studying at table in classroom
    Eager students touching globe in geography teachers hands — Stock Photo
    Eager students touching globe in geography teachers hands
    Female college student looking at chemicals in beaker on table — Stock Photo
    Female college student looking at chemicals in beaker on table
    Students conducting scientific experiment in laboratory classroom — Stock Photo
    Students conducting scientific experiment in laboratory classroom
    Junior high school students using digital tablet in classroom — Stock Photo
    Junior high school students using digital tablet in classroom
    High school students studying at tables in classroom — Stock Photo
    High school students studying at tables in classroom
    Junior high school students using smartphone at desk in classroom — Stock Photo
    Junior high school students using smartphone at desk in classroom