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    Male teacher and boy student conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher and boy student conducting scientific experiment in laboratory classroom
    Rear view of a multi-ethnic group of teenage male field hockey players, training before a game, working out on a field hockey pitch, sprinting on a sunny day — Stock Photo
    Rear view of a multi-ethnic group of teenage male field hockey players, training before a game, working out on a field hockey pitch, sprinting on a sunny day
    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
    High school student studying, writing in notebook during lesson in classroom — Stock Photo
    High school student studying, writing in notebook during lesson in classroom
    Junior high school students participating with hands raised in classroom — Stock Photo
    Junior high school students participating with hands raised in classroom
    Front view of a multi-ethnic team of teenage male field hockey players preparing before a game, standing on the pitch in a row, wearing their team strip, holding their hockey sticks, looking to camera on a sunny day — Stock Photo
    Front view of a multi-ethnic team of teenage male field hockey players preparing before a game, standing on the pitch in a row, wearing their team strip, holding their hockey sticks, looking to camera 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
    Central Asia, Kyrgyzstan, Issyk Kul Province (Ysyk-K?l), not far from Karakol, haystacks — Stock Photo
    Central Asia, Kyrgyzstan, Issyk Kul Province (Ysyk-K?l), not far from Karakol, haystacks
    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
    Side view low section of male field hockey player in action on the pitch, preparing to hit a ball from the middle line on a sunny day, backlit — Stock Photo
    Side view low section of male field hockey player in action on the pitch, preparing to hit a ball from the middle line on a sunny day, backlit
    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, with the arm of the female conductor in the foreground — 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, with the arm of the female conductor in the foreground
    Students practicing experiment in lab — Stock Photo
    Students practicing experiment in lab
    France, Brittany, Morbihan. Aerial view. Harvest. — Stock Photo
    France, Brittany, Morbihan. Aerial view. Harvest.
    College students sitting at table during exam in classroom — Stock Photo
    College students sitting at table during exam in classroom
    Portrait of confident junior high school student leaving classroom — Stock Photo
    Portrait of confident junior high school student leaving classroom
    High angle view of girl using computer while practicing experiment in lab — Stock Photo
    High angle view of girl using computer while practicing experiment in lab
    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
    Side view of a group of female Caucasian field hockey players and their Caucasian male coach training before a game, standing on a stand, resting, listening to their coach, on a sunny day — Stock Photo
    Side view of a group of female Caucasian field hockey players and their Caucasian male coach training before a game, standing on a stand, resting, listening to their coach, on a sunny day
    Smiling girl students examining liquid in test tube, conducting scientific experiment in laboratory classroom — Stock Photo
    Smiling girl students examining liquid in test tube, conducting scientific experiment in laboratory classroom
    Teenagers playing pool in community center — Stock Photo
    Teenagers playing pool in community center
    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
    Low section of schoolkid studying in the classroom — Stock Photo
    Low section of schoolkid studying in the classroom
    Side view of a mixed race male field hockey player, training on a field hockey pitch before a game, kneeling and trying to hit a ball with a hockey stick, with his teammates in the background on a sunny day — Stock Photo
    Side view of a mixed race male field hockey player, training on a field hockey pitch before a game, kneeling and trying to hit a ball with a hockey stick, with his teammates in the background on a sunny day
    Portrait of confident, smiling junior high student — Stock Photo
    Portrait of confident, smiling junior high student
    Junior high school students with backpacks in classroom — Stock Photo
    Junior high school students with backpacks in classroom
    Female student using desktop computer while sitting by window in classroom — Stock Photo
    Female student using desktop computer while sitting by window in classroom
    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
    Portrait smiling, confident junior high school girl in classroom — Stock Photo
    Portrait smiling, confident junior high school girl in classroom
    Side view close up of a Caucasian teenage boy sitting alone in a schoolyard wearing headphones and looking at a smartphone — Stock Photo
    Side view close up of a Caucasian teenage boy sitting alone in a schoolyard wearing headphones and looking at a smartphone
    Low section front view close up of female high school student, using a smartphone and sitting on steps in the school grounds — Stock Photo
    Low section front view close up of female high school student, using a smartphone and sitting on steps in the school grounds
    Front view of a multi-ethnic group of teenage pupils concentrating sitting at desks in class studying at school in a high school — Stock Photo
    Front view of a multi-ethnic group of teenage pupils concentrating sitting at desks in class studying at school in a high school
    Side view of a multi-ethnic group of male and female teenagers hanging out smiling laughing and talking in their school grounds in the sunlight — Stock Photo
    Side view of a multi-ethnic group of male and female teenagers hanging out smiling laughing and talking in their school grounds in the sunlight
    Young college students practicing chemistry experiment in lab — Stock Photo
    Young college students practicing chemistry experiment in lab
    Junior high school students doing homework at desks in classroom — Stock Photo
    Junior high school students doing homework at desks 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
    Female students discussing at desk in classroom — Stock Photo
    Female students discussing at desk in 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
    Female teacher and students conducting scientific experiment in laboratory classroom — Stock Photo
    Female teacher and students conducting scientific experiment in laboratory classroom
    Junior high school students studying at desk in classroom — Stock Photo
    Junior high school students studying at desk in classroom
    Students studying at desk in classroom — Stock Photo
    Students studying at desk in classroom
    Side view of a Caucasian teenage male high school student in an empty high school theatre preparing before a performance, sitting on chair on the stage, holding a script and practicing his part — Stock Photo
    Side view of a Caucasian teenage male high school student in an empty high school theatre preparing before a performance, sitting on chair on the stage, holding a script and practicing his part
    Curious, focused boy examining computer chip in classroom — Stock Photo
    Curious, focused boy examining computer chip in classroom
    Driving south on Chuckanut Drive out of Belllingham on an October day with the leaves on the trees turning yellow; Washington, United States of America — Stock Photo
    Driving south on Chuckanut Drive out of Belllingham on an October day with the leaves on the trees turning yellow; Washington, United States of America
    Students studying in the class at school — Stock Photo
    Students studying in the class at school
    Side view of a group of female Caucasian field hockey players, training before a game, working out on a field hockey pitch, doing exercises, stretching their legs, holding hockey sticks 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 exercises, stretching their legs, holding hockey sticks on a sunny day
    Focused boy student reading textbook at microscope in laboratory classroom — Stock Photo
    Focused boy student reading textbook at microscope in laboratory classroom
    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
    Elegant wedding rings on table — Stock Photo
    Elegant wedding rings on table
    University students practicing experiment in lab — Stock Photo
    University students practicing experiment in lab
    Junior high girl students entering library — Stock Photo
    Junior high girl students entering library
    Side view of two Caucasian teenage girls with long dark hair sitting in front of a window playing a flute and a ukulele and looking to camera — Stock Photo
    Side view of two Caucasian teenage girls with long dark hair sitting in front of a window playing a flute and a ukulele and looking to camera
    Side 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
    Side 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
    Portrait smiling girl student using computer in computer lab — Stock Photo
    Portrait smiling girl student using computer in computer lab
    Elegant wedding rings on table — Stock Photo
    Elegant wedding rings on table
    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
    Portrait of playful junior high girl student wearing virtual reality glasses — Stock Photo
    Portrait of playful junior high girl student wearing virtual reality glasses
    Smiling female students studying at desk in classroom — Stock Photo
    Smiling female students studying at desk in classroom
    High school boy student with hand raised during lesson in classroom — Stock Photo
    High school boy student with hand raised during lesson in classroom
    Girl student examining and touching molecular structure in classroom — Stock Photo
    Girl student examining and touching molecular structure in classroom
    Front view of a multi-ethnic group of teenage male and female musicians sitting in a classroom holding their instruments during a break in school band practice session — Stock Photo
    Front view of a multi-ethnic group of teenage male and female musicians sitting in a classroom holding their instruments during a break in school band practice session