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    Portrait of smiling, confident junior high school students studying in classroom — Stock Photo
    Portrait of smiling, confident junior high school students studying in classroom
    Students studying at desk in classroom — Stock Photo
    Students studying at desk in classroom
    Digital illustration of solid node in right lung near lung apex while secondary tuberculosis infection. — Stock Photo
    Digital illustration of solid node in right lung near lung apex while secondary tuberculosis infection.
    High angle view of students practicing diagram while studyhing at desk in classroom — Stock Photo
    High angle view of students practicing diagram while studyhing at desk in classroom
    University students practicing experiment in lab — Stock Photo
    University students practicing experiment in lab
    Smiling male science teacher leading lesson at whiteboard in classroom — Stock Photo
    Smiling male science teacher leading lesson at whiteboard 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
    Students studying in the class at school — Stock Photo
    Students studying in the class at school
    Sri Lanka. Mirissa, planting cinnamon. Cinnamon is the inner bark of the cinnamon tree. Artisanal preparation of cinnamon stick. — Stock Photo
    Sri Lanka. Mirissa, planting cinnamon. Cinnamon is the inner bark of the cinnamon tree. Artisanal preparation of cinnamon stick.
    College students using microscope while practicing experiment in lab — Stock Photo
    College students using microscope while practicing experiment in lab
    Focused teenage boy with clipboard vlogging — Stock Photo
    Focused teenage boy with clipboard vlogging
    Smiling boy wearing goggles and lab coat in laboratory classroom — Stock Photo
    Smiling boy wearing goggles and lab coat in laboratory classroom
    Teenage girl using laptop computer while sitting in classroom — Stock Photo
    Teenage girl using laptop computer while sitting in classroom
    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
    High school teacher calling on students during lesson in classroom — Stock Photo
    High school teacher calling on students during lesson in classroom
    Junior high girl students walking in library — Stock Photo
    Junior high girl students walking in library
    Side view of a teenage Caucasian boy in a school classroom sitting at desk, looking for a pen in his pencil case, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Side view of a teenage Caucasian boy in a school classroom sitting at desk, looking for a pen in his pencil case, with teenage male and female classmates sitting at desks working in the background
    Tween boys playing basketball in schoolyard — Stock Photo
    Tween boys playing basketball in schoolyard
    Schoolkids holding sketch pens in classroom at school — Stock Photo
    Schoolkids holding sketch pens in classroom at school
    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
    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.
    Side view of a mixed race teenage male high school student in an empty school theatre during rehearsals for a performance, standing on the stage holding a script and practicing his part, with other pupils holding scripts in the background — Stock Photo
    Side view of a mixed race teenage male high school student in an empty school theatre during rehearsals for a performance, standing on the stage holding a script and practicing his part, with other pupils holding scripts in the background
    Male teacher teaching students in the classroom at school — Stock Photo
    Male teacher teaching students in the classroom at school
    Front 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
    Front 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 multi-ethnic group of teenage male field hockey players training before a game, working out on a field hockey pitch, running on the spot on a sunny day — Stock Photo
    Side view of a multi-ethnic group of teenage male field hockey players training before a game, working out on a field hockey pitch, running on the spot on a sunny day
    France, Lot et Garonne, aerial view of Lake Buydron near Villefranche du Queyran — Stock Photo
    France, Lot et Garonne, aerial view of Lake Buydron near Villefranche du Queyran
    Front view of a teenage mixed-race boy in a school classroom sitting at desk, raising his hand to answer a question, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Front view of a teenage mixed-race boy in a school classroom sitting at desk, raising his hand to answer a question, with teenage male and female classmates sitting at desks working in the background
    Teacher and students in classroom during lesson — Stock Photo
    Teacher and students in classroom during lesson
    Students working at computers in laboratory — Stock Photo
    Students working at computers in laboratory
    Side view high angle of a Caucasian male field hockey player, sitting in the changing room, resting and focusing before a game — Stock Photo
    Side view high angle of a Caucasian male field hockey player, sitting in the changing room, resting and focusing before a game
    France, Limousin, sheep in the countryside. — Stock Photo
    France, Limousin, sheep in the countryside.
    Junior high school students enjoying lesson at desks in classroom — Stock Photo
    Junior high school students enjoying lesson at desks in classroom
    Front view of a multi-ethnic group of teenage male and female high school students with schoolbags hanging out, standing and hand stacking in their school grounds — Stock Photo
    Front view of a multi-ethnic group of teenage male and female high school students with schoolbags hanging out, standing and hand stacking in their school grounds
    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
    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
    View of boy programming at computer in classroom on digital camera viewfinder — Stock Photo
    View of boy programming at computer in classroom on digital camera viewfinder
    Junior high students using computer in computer lab — Stock Photo
    Junior high students using computer in computer lab
    Bridal high-heeled shoes with flowers — Stock Photo
    Bridal high-heeled shoes with flowers
    Focused junior high school girl student doing homework in classroom — Stock Photo
    Focused junior high school girl student doing homework in classroom
    Side view of two teams of female Caucasian field hockey players, preparing before a game, huddling, motivating each other, on a sunny day — Stock Photo
    Side view of two teams of female Caucasian field hockey players, preparing before a game, huddling, motivating each other, on a sunny day
    Teenage girl using digital tablet while standing by desk in lab — Stock Photo
    Teenage girl using digital tablet while standing by desk in lab
    Female college student using digital tablet at desk in classroom — Stock Photo
    Female college student using digital tablet at desk in classroom
    Male teacher with students in classroom at school — Stock Photo
    Male teacher with students in classroom at school
    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 and their Caucasian field hockey coach, training before a game, working out on a field hockey pitch, exercising, doing sit ups, on a sunny day — Stock Photo
    Side view of a group of female Caucasian field hockey players and their Caucasian field hockey coach, training before a game, working out on a field hockey pitch, exercising, doing sit ups, on a sunny day
    Female science teacher and girl student writing at whiteboard in classroom — Stock Photo
    Female science teacher and girl student writing at whiteboard in classroom
    Teachers tutoring students at library table — Stock Photo
    Teachers tutoring students at library table
    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
    Teacher leading lesson, calling on students in classroom — Stock Photo
    Teacher leading lesson, calling on students in classroom
    Digital molecular model of secondary structure of immunoglobulin G antibodies. — Stock Photo
    Digital molecular model of secondary structure of immunoglobulin G antibodies.
    High school girl student doing homework at table in classroom — Stock Photo
    High school girl student doing homework at table in classroom
    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
    Male teacher teaching students in the classroom at school — Stock Photo
    Male teacher teaching students in the classroom at school
    Male science teacher and students conducting scientific experiment in laboratory classroom — Stock Photo
    Male science teacher and students conducting scientific experiment in laboratory 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 — 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
    Side view of a Caucasian male field hockey coach interacting with a multi-ethnic group of female 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 multi-ethnic group of female field hockey players, sitting in a changing room, showing them a game plan
    Front view of a group of female Caucasian field hockey players and their Caucasian male field hockey coach, training before a game, working out on a field hockey pitch, doing strength exercises, on a sunny day — Stock Photo
    Front view of a group of female Caucasian field hockey players and their Caucasian male field hockey coach, training before a game, working out on a field hockey pitch, doing strength exercises, on a sunny day
    Closeup on lettuce grown on an above-ground tray. — Stock Photo
    Closeup on lettuce grown on an above-ground tray.
    Girl students studying at computers in library — Stock Photo
    Girl students studying at computers in library
    France, Normandy, Montmartin-sur Mer, Haystacks mechanically rolled at the time of harvest. — Stock Photo
    France, Normandy, Montmartin-sur Mer, Haystacks mechanically rolled at the time of harvest.