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    Teenage girl practicing chemistry experiment in lab — Stock Photo
    Teenage girl practicing chemistry experiment in lab
    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
    High school students with hands raised during lesson in classroom — Stock Photo
    High school students with hands raised during lesson in classroom
    Front view of a multi-ethnic group of teenage school pupils and their Caucasian male teacher standing in a classroom looking at laptop computers together and smiling — Stock Photo
    Front view of a multi-ethnic group of teenage school pupils and their Caucasian male teacher standing in a classroom looking at laptop computers together and smiling
    Close up focused, attentive high school girl student listening in classroom — Stock Photo
    Close up focused, attentive high school girl student listening in classroom
    Girl students researching at computer in library — Stock Photo
    Girl students researching at computer in library
    Low angle view of a group of female Caucasian field hockey players and their Caucasian male coach training before a game, running on a stand up and down, on a sunny day — Stock Photo
    Low angle view of a group of female Caucasian field hockey players and their Caucasian male coach training before a game, running on a stand up and down, on a sunny day
    Students writing their GCSE exam in classroom — Stock Photo
    Students writing their GCSE exam in classroom
    Schoolkids studying in the classroom at school — Stock Photo
    Schoolkids studying in the classroom at school
    Woman reading file while practicing experiment in lab — Stock Photo
    Woman reading file while practicing experiment in lab
    France, Northern France, Pas de Calais. Calais. Community gardens. — Stock Photo
    France, Northern France, Pas de Calais. Calais. Community gardens.
    Portrait of a Caucasian female field hockey player, preparing before a game, standing in a changing room, wearing a hockey helmet, with her teammates standing in a row behind her — Stock Photo
    Portrait of a Caucasian female field hockey player, preparing before a game, standing in a changing room, wearing a hockey helmet, with her teammates standing in a row behind her
    Ovary. Light micrograph (LM) of section through whole ovary. Cortex (outer region) contains numerous corpora lutea (pink) and follicles (purple) at various stages of development — Stock Photo
    Ovary. Light micrograph (LM) of section through whole ovary. Cortex (outer region) contains numerous corpora lutea (pink) and follicles (purple) at various stages of development
    Front 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
    Front 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 students talking — Stock Photo
    Junior high students talking
    Boy student programming at computer in dark classroom — Stock Photo
    Boy student programming at computer in dark 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
    Junior high school students studying at desks in classroom — Stock Photo
    Junior high school students studying at desks in classroom
    Portrait smiling, confident male teacher in classroom — Stock Photo
    Portrait smiling, confident male teacher in classroom
    Portrait smiling, confident junior high school girl student with headphones at desk in classroom — Stock Photo
    Portrait smiling, confident junior high school girl student with headphones at desk in classroom
    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 of a Caucasian female field hockey player preparing before a game, sitting in a changing room, focusing — Stock Photo
    Side view of a Caucasian female field hockey player preparing before a game, sitting in a changing room, focusing
    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
    Thoughtful male student with classmates at desk in classroom — Stock Photo
    Thoughtful male student with classmates at desk in classroom
    Students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Students watching chemical reaction, conducting scientific experiment in laboratory classroom
    Female college students practicing chemistry experiment at desk in lab — Stock Photo
    Female college students practicing chemistry experiment at desk in lab
    Teacher and students during chemistry lesson, wearing protective eyewear and looking at test tubes — Stock Photo
    Teacher and students during chemistry lesson, wearing protective eyewear and looking at test tubes
    Teenage boys spray painting in high school art class — Stock Photo
    Teenage boys spray painting in high school art class
    Front view of a teenage African American female high school student reading to a multi-ethnic class of teenagers in a school classroom sitting at desks listening and concentrating, their male Caucasian teacher standing and listening in the background — Stock Photo
    Front view of a teenage African American female high school student reading to a multi-ethnic class of teenagers in a school classroom sitting at desks listening and concentrating, their male Caucasian teacher standing and listening in the background
    Portrait confident junior high school boy studying in classroom — Stock Photo
    Portrait confident junior high school boy studying in classroom
    Front view of a multi-ethnic group of teenage school pupils standing together in a classroom and smiling to camera at break time — Stock Photo
    Front view of a multi-ethnic group of teenage school pupils standing together in a classroom and smiling to camera at break time
    High school teacher helping students with homework in classroom — Stock Photo
    High school teacher helping students with homework in classroom
    Side view of a teenage Caucasian male field hockey player, preparing to hit a ball on the pitch during a hockey game between two multi-ethnic teenage male teams, on a sunny day — Stock Photo
    Side view of a teenage Caucasian male field hockey player, preparing to hit a ball on the pitch during a hockey game between two multi-ethnic teenage male teams, on a sunny day
    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
    Girl student programming and assembling robotics in classroom — Stock Photo
    Girl student programming and assembling robotics in classroom
    Focused junior high school student using highlighter, doing homework in classroom — Stock Photo
    Focused junior high school student using highlighter, doing homework in classroom
    Female teacher in hijab leading lesson at projection screen in classroom — Stock Photo
    Female teacher in hijab leading lesson at projection screen in classroom
    Man assisting female friend while studying at desk in classroom — Stock Photo
    Man assisting female friend while studying at desk in classroom
    Side 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
    Side 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
    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
    Schoolboy using digital tablet in classroom at school — Stock Photo
    Schoolboy using digital tablet in classroom at school
    Side view of a group of female Caucasian field hockey players, preparing before a game, huddling, with one player talking to her Caucasian male coach in the foreground, on a sunny day — Stock Photo
    Side view of a group of female Caucasian field hockey players, preparing before a game, huddling, with one player talking to her Caucasian male coach in the foreground, on a sunny day
    Schoolkids studying in the classroom at school — Stock Photo
    Schoolkids studying in the classroom at school
    College students discussing while studying at desk in classroom — Stock Photo
    College students discussing while studying at desk in classroom
    Secondary follicles in an ovary — Stock Photo
    Secondary follicles in an ovary
    Confident junior high school girl student doing homework in classroom — Stock Photo
    Confident junior high school girl student doing homework 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
    Curious girl students conducting scientific experiment in laboratory classroom — Stock Photo
    Curious girl students conducting scientific experiment in laboratory classroom
    Side view of a multi-ethnic group of teenage male and female musicians sitting in a classroom talking during a break in their school band practice — Stock Photo
    Side view of a multi-ethnic group of teenage male and female musicians sitting in a classroom talking during a break in their school band practice
    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, writing on a whiteboard — 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, writing on a whiteboard
    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
    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
    Junior high students leaving school building, descending steps — Stock Photo
    Junior high students leaving school building, descending steps
    Male teacher and students conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher and students conducting scientific experiment in laboratory classroom
    Boy student examining DNA model in classroom — Stock Photo
    Boy student examining DNA model in classroom
    Focused junior high school girl student listening in classroom — Stock Photo
    Focused junior high school girl student listening 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
    Teacher and junior high school students using futuristic touch screen in classroom — Stock Photo
    Teacher and junior high school students using futuristic touch screen in classroom
    Side view mid section of group of teenage male and female choristers standing in a row holding sheet music on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view mid section of group of teenage male and female choristers standing in a row holding sheet music on the stage of a school theatre during rehearsals for a performance
    Front 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
    Front 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