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    Side view of a multi-ethnic group of teenage male and female high school pupils in a classroom, working on computers and concentrating — Stock Photo
    Side view of a multi-ethnic group of teenage male and female high school pupils in a classroom, working on computers and concentrating
    Side view close up of a Caucasian sad teenage girl sitting on the ground alone in a schoolyard in a high school — Stock Photo
    Side view close up of a Caucasian sad teenage girl sitting on the ground alone in a schoolyard in a high school
    Side view of a Caucasian teenage boy in an empty high school theatre, sitting on steps of the front of the stage, preparing for a performance, holding a script and learning lines — Stock Photo
    Side view of a Caucasian teenage boy in an empty high school theatre, sitting on steps of the front of the stage, preparing for a performance, holding a script and learning lines
    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 close up of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and using tablet computer, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Front view close up of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and using tablet computer, with teenage male and female classmates sitting at desks working in the background
    University students sitting at table during exam in classroom — Stock Photo
    University students sitting at table during exam in classroom
    Focused boy students using digital tablet and microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Focused boy students using digital tablet and 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
    Smiling male teacher leading lesson in classroom — Stock Photo
    Smiling male teacher leading lesson in classroom
    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
    Junior high students using computer in computer lab — Stock Photo
    Junior high students using computer in computer lab
    Female teacher in hijab leading lesson at projection screen in classroom — Stock Photo
    Female teacher in hijab leading lesson at projection screen in classroom
    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
    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 with hands raised in classroom — Stock Photo
    High school students with hands raised in classroom
    Female university student using digital tablet while sitting at desk in classroom — Stock Photo
    Female university student using digital tablet while sitting at desk in classroom
    Laughing girl student at microscope in laboratory classroom — Stock Photo
    Laughing girl student at microscope in laboratory classroom
    Portrait of confident junior high student — Stock Photo
    Portrait of confident junior high student
    Female high school teacher helping girl student with homework in classroom — Stock Photo
    Female high school teacher helping girl student with homework in classroom
    Courtyard Of Coimbra University — Stock Photo
    Courtyard Of Coimbra University
    Side view of a male Caucasian teacher standing and talking with a teenage African American female high school student working on a computer and concentrating in a classroom — Stock Photo
    Side view of a male Caucasian teacher standing and talking with a teenage African American female high school student working on a computer and concentrating in a classroom
    Surprised, curious students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Surprised, curious students watching chemical reaction, conducting scientific experiment in laboratory classroom
    Portrait confident female teacher at projection screen in classroom — Stock Photo
    Portrait confident female teacher at projection screen in classroom
    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
    High angle view of teenage girl studying at desk in classroom — Stock Photo
    High angle view of teenage girl studying at desk in classroom
    Front view of a Caucasian teenage girl sitting in a classroom playing a violin at a school band practice, with other teenage musicians sitting in the foreground — Stock Photo
    Front view of a Caucasian teenage girl sitting in a classroom playing a violin at a school band practice, with other teenage musicians sitting in the foreground
    Female college students practicing chemistry experiment in lab — Stock Photo
    Female college students practicing chemistry experiment in lab
    Focused junior high school boys doing homework in classroom — Stock Photo
    Focused junior high school boys doing homework in classroom
    Front view of multi-ethnic group of teenagers in a high school classroom sitting at desks, all raising their hands to answer a question — Stock Photo
    Front view of multi-ethnic group of teenagers in a high school classroom sitting at desks, all raising their hands to answer a question
    Side view of young male student studying at desk by window in classroom — Stock Photo
    Side view of young male student studying at desk by window in classroom
    Male teacher teaching students in the classroom at school — Stock Photo
    Male teacher teaching students in the classroom at school
    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
    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
    Happy elementary school boy using digital tablet in classroom — Stock Photo
    Happy elementary school boy using digital tablet in classroom
    Teenage girls designing denim jacket in fashion design class — Stock Photo
    Teenage girls designing denim jacket in fashion design class
    Junior high school students participating with hands raised in classroom — Stock Photo
    Junior high school students participating with hands raised in classroom
    Schoolkids looking at world map in classroom at school — Stock Photo
    Schoolkids looking at world map in classroom at school
    Teenagers with video camera and microphone vlogging — Stock Photo
    Teenagers with video camera and microphone vlogging
    Elevated view of students writing their GCSE exam in classroom — Stock Photo
    Elevated view of students writing their GCSE exam in classroom
    Junior high students leaving school building, descending steps — Stock Photo
    Junior high students leaving school building, descending steps
    Schoolboy writing on chalkboard in classroom at school — Stock Photo
    Schoolboy writing on chalkboard in classroom at school
    Curious boy examining molecule model in laboratory classroom — Stock Photo
    Curious boy examining molecule model in laboratory classroom
    Side view of a teenage Caucasian girl 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 of a teenage Caucasian girl in a school classroom sitting at desk, concentrating, with teenage male and female classmates sitting at desks working in the background
    Front 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
    Front 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
    Portrait close up of a Caucasian teenage boy with short blonde hair and blue eyes standing in a school classroom smiling to camera, with classmates talking in the background — Stock Photo
    Portrait close up of a Caucasian teenage boy with short blonde hair and blue eyes standing in a school classroom smiling to camera, with classmates talking in the background
    Thoughtful female college student at desk during exam in classroom — Stock Photo
    Thoughtful female college student at desk during exam in classroom
    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
    Teacher helping junior high students using computer in computer lab — Stock Photo
    Teacher helping junior high students using computer in computer lab
    High school teacher helping students studying in classroom — Stock Photo
    High school teacher helping students studying in classroom
    Front 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
    Front 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
    High school teacher leading geography lesson at projection screen in classroom — Stock Photo
    High school teacher leading geography lesson at projection screen in classroom
    Front view of a multi-ethnic group of male and female teenagers with schoolbags hanging out and talking in their school grounds in sunlight — Stock Photo
    Front view of a multi-ethnic group of male and female teenagers with schoolbags hanging out and talking in their school grounds in sunlight
    Girl students researching at computer in library — Stock Photo
    Girl students researching at computer in library
    Surprised students conducting exploding foam scientific experiment in classroom laboratory — Stock Photo
    Surprised students conducting exploding foam scientific experiment in classroom laboratory
    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
    Girl student using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl student using microscope, conducting scientific experiment in laboratory classroom
    Teenage female practicing chemistry experiment in lab — Stock Photo
    Teenage female practicing chemistry experiment in lab
    Schoolboy using mobile phone near chalkboard in classroom — Stock Photo
    Schoolboy using mobile phone near chalkboard in classroom
    Portrait of smiling, confident junior high school student doing homework in classroom — Stock Photo
    Portrait of smiling, confident junior high school student doing homework in classroom
    Portrait close up of a Caucasian teenage boy with short dark hair and grey eyes standing in a school classroom smiling to camera, with classmates talking in the background — Stock Photo
    Portrait close up of a Caucasian teenage boy with short dark hair and grey eyes standing in a school classroom smiling to camera, with classmates talking in the background