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    High school students clapping for classmate in debate class — Stock Photo
    High school students clapping for classmate in debate class
    High school teacher helping students studying in classroom — Stock Photo
    High school teacher helping students studying in classroom
    Students examining DNA model in classroom laboratory — Stock Photo
    Students examining DNA model in classroom laboratory
    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
    Curious girl student holding molecule model in classroom — Stock Photo
    Curious girl student holding molecule model in classroom
    Curious girl student examining molecular structure in classroom — Stock Photo
    Curious girl student examining molecular structure in classroom
    Surprised students conducting exploding foam scientific experiment in classroom laboratory — Stock Photo
    Surprised students conducting exploding foam scientific experiment in classroom laboratory
    Smiling high school girl student clapping in classroom — Stock Photo
    Smiling high school girl student clapping in classroom
    Attentive high school students listening in classroom — Stock Photo
    Attentive high school students listening in classroom
    Female high school teacher helping girl student studying at table in classroom — Stock Photo
    Female high school teacher helping girl student studying at table in classroom
    Focused high school girl student studying in classroom — Stock Photo
    Focused high school girl student studying in classroom
    Students conducting scientific experiment in laboratory classroom — Stock Photo
    Students conducting scientific experiment in laboratory classroom
    Smiling high school girl student leaving classroom — Stock Photo
    Smiling high school girl student leaving classroom
    High school students with hands raised in debate class — Stock Photo
    High school students with hands raised in debate class
    Male teacher helping girl student at microscope in laboratory classroom — Stock Photo
    Male teacher helping girl student at microscope in laboratory classroom
    Female high school teacher helping girl student with homework in classroom — Stock Photo
    Female high school teacher helping girl student with homework in classroom
    Boy student examining DNA model in classroom — Stock Photo
    Boy student examining DNA model in classroom
    France, Northern France, Pas de Calais. Harvest; — Stock Photo
    France, Northern France, Pas de Calais. Harvest;
    Male teacher and girl students conducting scientific experiment at microscope in laboratory classroom — Stock Photo
    Male teacher and girl students conducting scientific experiment at microscope in laboratory classroom
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory — Stock Photo
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory
    Male science teacher and students laughing, conducting scientific experiment in laboratory classroom — Stock Photo
    Male science teacher and students laughing, conducting scientific experiment in laboratory classroom
    Portrait confident female high school teacher at projection screen in classroom — Stock Photo
    Portrait confident female high school teacher at projection screen in classroom
    High school students with hands raised in classroom — Stock Photo
    High school students with hands raised in classroom
    High school students clapping for teacher in debate class — Stock Photo
    High school students clapping for teacher in debate class
    Happy, smiling high school girl student talking with classmate in classroom — Stock Photo
    Happy, smiling high school girl student talking with classmate in classroom
    Portrait confident students holding molecular structures in laboratory classroom — Stock Photo
    Portrait confident students holding molecular structures in laboratory classroom
    Science teacher helping girl student at microscope in classroom laboratory — Stock Photo
    Science teacher helping girl student at microscope in classroom laboratory
    Students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Students watching chemical reaction, conducting scientific experiment in laboratory classroom
    Curious girl student examining molecular structure — Stock Photo
    Curious girl student examining molecular structure
    France, Paris. Vincennes. Bois de Vincennes. La Ferme de Paris. Organic agriculture and farming educational farm. — Stock Photo
    France, Paris. Vincennes. Bois de Vincennes. La Ferme de Paris. Organic agriculture and farming educational farm.
    High school teacher leading lesson, calling on students with arms raised in classroom — Stock Photo
    High school teacher leading lesson, calling on students with arms raised in classroom
    Curious, smiling students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Curious, smiling students watching chemical reaction, conducting scientific experiment in laboratory classroom
    High school students with hands raised, asking questions during lesson in classroom — Stock Photo
    High school students with hands raised, asking questions during lesson in classroom
    Smiling female high school teacher leading lesson in classroom — Stock Photo
    Smiling female high school teacher leading lesson in classroom
    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
    Broom stem. Light micrograph (LM) of transverse section through stem of common broom (Salicornia europaea) plant. Broom is drought plant (xerophyte) with ribbed stems and branches to increase area for photosynthesis — Stock Photo
    Broom stem. Light micrograph (LM) of transverse section through stem of common broom (Salicornia europaea) plant. Broom is drought plant (xerophyte) with ribbed stems and branches to increase area for photosynthesis
    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
    Broom stem. Light micrograph (LM) of transverse section through stem of common broom (Salicornia europaea) plant. Broom is drought plant (xerophyte) with ribbed stems and branches to increase area for photosynthesis — Stock Photo
    Broom stem. Light micrograph (LM) of transverse section through stem of common broom (Salicornia europaea) plant. Broom is drought plant (xerophyte) with ribbed stems and branches to increase area for photosynthesis
    Side view of an empty classroom, with desks in formation and blackboard behind them, with open windows in sunny day — Stock Photo
    Side view of an empty classroom, with desks in formation and blackboard behind them, with open windows in sunny day
    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
    Side view of a group of female Caucasian field hockey players preparing before a game, sitting in a changing room, putting on their shoes and gaiters — Stock Photo
    Side view of a group of female Caucasian field hockey players preparing before a game, sitting in a changing room, putting on their shoes and gaiters
    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 mid section of musician teenage boy with yellow t-shirt sitting and playing an acoustic guitar in a high school — Stock Photo
    Front view mid section of musician teenage boy with yellow t-shirt sitting and playing an acoustic guitar in a high school
    Rear view of two Caucasian teenage couples with schoolbags holding hands and walking across a school playing field on a sunny day — Stock Photo
    Rear view of two Caucasian teenage couples with schoolbags holding hands and walking across a school playing field on a sunny day
    Portrait of a confident Caucasian female field hockey player, preparing before a game, looking at camera with her teammates standing in a row in the background on a sunny day — Stock Photo
    Portrait of a confident Caucasian female field hockey player, preparing before a game, looking at camera with her teammates standing in a row in the background on a sunny day
    Rear view of a Caucasian female field hockey player, during a field hockey game, running with a ball, holding a hockey stick, with her teammates and opponents in the foreground, on a sunny day — Stock Photo
    Rear view of a Caucasian female field hockey player, during a field hockey game, running with a ball, holding a hockey stick, with her teammates and opponents in the foreground, on a sunny day
    Portrait of a Caucasian female field hockey player, training before a game, working out on a hockey pitch, looking at camera, with her teammates in the background on a sunny day — Stock Photo
    Portrait of a Caucasian female field hockey player, training before a game, working out on a hockey pitch, looking at camera, with her teammates in the background on a sunny day
    Side view of a Caucasian female conductor and a multi-ethnic group of teenage male and female choristers standing opposite, singing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view of a Caucasian female conductor and a multi-ethnic group of teenage male and female choristers standing opposite, singing on the stage of a school theatre during rehearsals for a performance
    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
    Side view of a Caucasian female field hockey goalkeeper, during a field hockey game, protecting a goal from a ball, on a sunny day — Stock Photo
    Side view of a Caucasian female field hockey goalkeeper, during a field hockey game, protecting a goal from a ball, on a sunny day
    High angle front view of a Caucasian teenage boy sitting at a desk in a school classroom looking away, thinking, classmates sitting at desks in the background — Stock Photo
    High angle front view of a Caucasian teenage boy sitting at a desk in a school classroom looking away, thinking, classmates sitting at desks in the background
    Front view of multi-ethnic group of teenage boys and girls holding scripts and performing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Front view of multi-ethnic group of teenage boys and girls holding scripts and performing on the stage of a school theatre during rehearsals for a performance
    Side view of a team of female Caucasian field hockey players, during a field hockey game, celebrating a goal, with disappointed opponents standing in the background, on a sunny day — Stock Photo
    Side view of a team of female Caucasian field hockey players, during a field hockey game, celebrating a goal, with disappointed opponents standing in the background, on a sunny day
    Portrait of a Caucasian teenage girl sitting at a desk in a school classroom using a laptop computer and looking to camera smiling, with classmates sitting at desks working in the background — Stock Photo
    Portrait of a Caucasian teenage girl sitting at a desk in a school classroom using a laptop computer and looking to camera smiling, with classmates sitting at desks working in the background
    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
    Portrait of a Caucasian teenage girl sitting at a desk in a school classroom writing in a notebook and looking to camera smiling, with classmates sitting at desks working in the background — Stock Photo
    Portrait of a Caucasian teenage girl sitting at a desk in a school classroom writing in a notebook and looking to camera smiling, with classmates sitting at desks working in the background
    High angle side view of a Caucasian male teacher sitting in a classroom conducting a multi-ethnic group of teenage male and female musicians at a school band practice — Stock Photo
    High angle side view of a Caucasian male teacher sitting in a classroom conducting a multi-ethnic group of teenage male and female musicians at a school band practice
    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
    Front view of a Caucasian teenage boy sitting by a window holding an acoustic guitar, with a Caucasian teenage boy sitting behind him playing the saxophone in a high school — Stock Photo
    Front view of a Caucasian teenage boy sitting by a window holding an acoustic guitar, with a Caucasian teenage boy sitting behind him playing the saxophone in a high school
    Front view of a group of confident female Caucasian field hockey players, preparing before a game, standing in a row, with arms crossed, looking at camera, on a sunny day — Stock Photo
    Front view of a group of confident female Caucasian field hockey players, preparing before a game, standing in a row, with arms crossed, looking at camera, on a sunny day