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    Surprised students conducting exploding foam scientific experiment in classroom laboratory — Stock Photo
    Surprised students conducting exploding foam scientific experiment in classroom laboratory
    Side view of a group of female Caucasian field hockey players preparing before a game, huddling around their Caucasian male coach, on a hockey pitch, who gives them game plan, and points at something, on a sunny day — Stock Photo
    Side view of a group of female Caucasian field hockey players preparing before a game, huddling around their Caucasian male coach, on a hockey pitch, who gives them game plan, and points at something, on a sunny day
    Junior high students discussing — Stock Photo
    Junior high students discussing
    Smiling female high school teacher leading lesson in classroom — Stock Photo
    Smiling female high school teacher leading lesson in classroom
    Front view of two teenage African American female school pupils in a classroom, sitting at a table working together and talking — Stock Photo
    Front view of two teenage African American female school pupils in a classroom, sitting at a table working together and talking
    Side view of a multi-ethnic group of teenage male field hockey players and their Caucasian male field hockey coach, training before a game, working out on a field hockey pitch, doing sit ups with partners holding legs, on a sunny day — Stock Photo
    Side view of a multi-ethnic group of teenage male field hockey players and their Caucasian male field hockey coach, training before a game, working out on a field hockey pitch, doing sit ups with partners holding legs, on a sunny day
    Side view of a Caucasian teenage girl playing a violin at a school band practice, with a saxophonist playing in the background — Stock Photo
    Side view of a Caucasian teenage girl playing a violin at a school band practice, with a saxophonist playing in the background
    Side view of a Caucasian high school teenage girl in an empty high school theatre preparing before a performance, standing on the stage with arms in the air, holding a script and practicing her part — Stock Photo
    Side view of a Caucasian high school teenage girl in an empty high school theatre preparing before a performance, standing on the stage with arms in the air, holding a script and practicing her part
    Portrait smiling, confident girl student next to DNA model in classroom — Stock Photo
    Portrait smiling, confident girl student next to DNA model in 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 of a Caucasian teenage boy sitting on the edge of the stage holding a script in an empty school theatre during rehearsals for a performance — Stock Photo
    Side view of a Caucasian teenage boy sitting on the edge of the stage holding a script in an empty school theatre during rehearsals for a performance
    Over the shoulder view of a Caucasian male field hockey coach interacting with a group of female Caucasian field hockey players, sitting in a changing room, holding a digital tablet — Stock Photo
    Over the shoulder view of a Caucasian male field hockey coach interacting with a group of female Caucasian field hockey players, sitting in a changing room, holding a digital tablet
    Portrait confident serious high school boy in corridor — Stock Photo
    Portrait confident serious high school boy in corridor
    Curious girl student holding molecule model in classroom — Stock Photo
    Curious girl student holding molecule model in classroom
    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, bending down to their feet 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, bending down to their feet on a sunny day
    Overhead view of a young girl painting outside on a wooden deck — Stock Photo
    Overhead view of a young girl painting outside on a wooden deck
    Portrait confident young male college student in library — Stock Photo
    Portrait confident young male college student in library
    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
    Portrait of a Caucasian musician teenage girl sitting by a window, looking to camera and holding a ukulele in a high school — Stock Photo
    Portrait of a Caucasian musician teenage girl sitting by a window, looking to camera and holding a ukulele in a high school
    Female student writing at desk in classroom — Stock Photo
    Female student writing at desk in classroom
    Side view of a group of female Caucasian field hockey players, training before a game, working out on a field hockey pitch, doing exercises, running, 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, running, on a sunny day
    Schoolboy raising hand — Stock Photo
    Schoolboy raising hand
    High angle rear 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 — Stock Photo
    High angle rear 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
    Portrait of playful, exuberant junior high student smiling — Stock Photo
    Portrait of playful, exuberant junior high student smiling
    Junior high students leaving school building, descending steps — Stock Photo
    Junior high students leaving school building, descending steps
    Portrait smiling, confident female teacher wearing hijab in classroom — Stock Photo
    Portrait smiling, confident female teacher wearing hijab in classroom
    Professor teaching in classroom with students at high school — Stock Photo
    Professor teaching in classroom with students at high school
    High school students talking and walking in corridor — Stock Photo
    High school students talking and walking in corridor
    Junior high school students participating with hands raised in classroom — Stock Photo
    Junior high school students participating with hands raised in classroom
    Eager, smiling students raising hands in science laboratory classroom — Stock Photo
    Eager, smiling students raising hands in science laboratory classroom
    High school students hanging out — Stock Photo
    High school students hanging out
    Small Boy's Face Is illuminated by a sparkler at Twilight — Stock Photo
    Small Boy's Face Is illuminated by a sparkler at Twilight
    Two handsome teenage boys with skateboard standing on the bridge — Stock Photo
    Two handsome teenage boys with skateboard standing on the bridge
    Side view mid section of male field hockey coach, sitting in the changing room, using a clipboard and drawing a game plan for the team — Stock Photo
    Side view mid section of male field hockey coach, sitting in the changing room, using a clipboard and drawing a game plan for the team
    Close up detail of a field hockey equipment, helmet glove and ball lying on a hockey pitch on a sunny day — Stock Photo
    Close up detail of a field hockey equipment, helmet glove and ball lying on a hockey pitch on a sunny day
    High angle mid section of musician teenage girl wearing a striped sweater sitting and playing a ukulele alone — Stock Photo
    High angle mid section of musician teenage girl wearing a striped sweater sitting and playing a ukulele alone
    High school girls talking on stairs — Stock Photo
    High school girls talking on stairs
    Three Siblings Walk On The Beach At Sunset While Wearing Face Masks — Stock Photo
    Three Siblings Walk On The Beach At Sunset While Wearing Face Masks
    Male teacher leading lesson at projection screen in classroom with students raising hands — Stock Photo
    Male teacher leading lesson at projection screen in classroom with students raising hands
    High school girl friends using smart phone — Stock Photo
    High school girl friends using smart phone
    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
    Rear view of a group of female Caucasian field hockey players, preparing before a game, standing in a row embracing with hands on their teammates shoulders, on a sunny day — Stock Photo
    Rear view of a group of female Caucasian field hockey players, preparing before a game, standing in a row embracing with hands on their teammates shoulders, on a sunny day
    Asian mother and daughter touching a cactus. — Stock Photo
    Asian mother and daughter touching a cactus.
    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 a Caucasian teenage girl in an empty high school theatre, sitting in the auditorium preparing for a performance, holding a script and learning lines — Stock Photo
    Side view of a Caucasian teenage girl in an empty high school theatre, sitting in the auditorium preparing for a performance, holding a script and learning lines
    Side view of a multi-ethnic group of teenage male field hockey players, preparing before a game, sitting in a changing room, getting ready, tying shoes and focusing — Stock Photo
    Side view of a multi-ethnic group of teenage male field hockey players, preparing before a game, sitting in a changing room, getting ready, tying shoes and focusing
    Side view of a teenage Caucasian boy in a school classroom sitting at desk, concentrating, looking out of the window and leaning his head on his hand — Stock Photo
    Side view of a teenage Caucasian boy in a school classroom sitting at desk, concentrating, looking out of the window and leaning his head on his hand
    Student finger painting in classroom — Stock Photo
    Student finger painting in classroom
    Side view of a teenage Caucasian boy holding sitting in front of a window in a classroom holding a French horn with a multi-ethnic group of teenage male and female musicians sitting behind him — Stock Photo
    Side view of a teenage Caucasian boy holding sitting in front of a window in a classroom holding a French horn with a multi-ethnic group of teenage male and female musicians sitting behind him
    Portrait close up of a Caucasian teenage boy with short 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 hair and grey eyes standing in a school classroom smiling to camera, with classmates talking in the background
    Side view of Caucasian teenage boy and girl holding scripts and performing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view of Caucasian teenage boy and girl holding scripts and performing on the stage of a school theatre during rehearsals for a performance
    Portrait confident junior high students and teachers from above — Stock Photo
    Portrait confident junior high students and teachers from above
    Young college students studying together in classroom — Stock Photo
    Young college students studying together in classroom
    Aerial view of Wuming Buddhist College at night of Seda County, Sichuan province, China — Stock Photo
    Aerial view of Wuming Buddhist College at night of Seda County, Sichuan province, China
    Portrait smiling confident female teacher in library — Stock Photo
    Portrait smiling confident female teacher in library
    Junior high school student using digital tablet in classroom — Stock Photo
    Junior high school student using digital tablet in classroom
    Wniversity students discussing by whiteboard — Stock Photo
    Wniversity students discussing by whiteboard
    Students holding pencil over books — Stock Photo
    Students holding pencil over books
    Portrait of confident junior high students — Stock Photo
    Portrait of confident junior high students
    Junior high students — Stock Photo
    Junior high students