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    Chinese college students with books talking in campus park in autumn — Stock Photo
    Chinese college students with books talking in campus park in autumn
    Young people looking at screen. — Stock Photo
    Young people looking at screen.
    Surprised students conducting exploding foam scientific experiment in classroom laboratory — Stock Photo
    Surprised students conducting exploding foam scientific experiment in classroom laboratory
    Front view of a Caucasian female and male high school pupils hanging out and embracing each other, standing in their school grounds — Stock Photo
    Front view of a Caucasian female and male high school pupils hanging out and embracing each other, standing in their school grounds
    Portrait close up of four young African schoolboys standing with arms around each other smiling to camera in the school yard of a township elementary school — Stock Photo
    Portrait close up of four young African schoolboys standing with arms around each other smiling to camera in the school yard of a township elementary school
    Two students sitting on floor and talking in university — Stock Photo
    Two students sitting on floor and talking in university
    Two handsome teenage boys with skateboard taking selfie on the street — Stock Photo
    Two handsome teenage boys with skateboard taking selfie on the street
    Professor with muscular dystrophy working with students in a laboratory — Stock Photo
    Professor with muscular dystrophy working with students in a laboratory
    Girl raising hand in classroom — Stock Photo
    Girl raising hand in classroom
    Student friends studying outdoors — Stock Photo
    Student friends studying outdoors
    Front view of a multi-ethnic group of teenage male and female school pupils with schoolbags hanging out, walking and talking in their high school grounds — Stock Photo
    Front view of a multi-ethnic group of teenage male and female school pupils with schoolbags hanging out, walking and talking in their high school grounds
    Front view of four young African schoolgirls wearing schoolbags smiling and walking with arms linked in the playground of a township elementary school — Stock Photo
    Front view of four young African schoolgirls wearing schoolbags smiling and walking with arms linked in the playground of a township elementary school
    Young asian college student using smartphone against grey wall — Stock Photo
    Young asian college student using smartphone against grey wall
    Student leaving classroom — Stock Photo
    Student leaving classroom
    Young female teacher and rural chinese school students playing outdoor — Stock Photo
    Young female teacher and rural chinese school students playing outdoor
    Girl raising her hand in a classroom — Stock Photo
    Girl raising her hand in a classroom
    Female scientist using microscope in laboratory — Stock Photo
    Female scientist using microscope in laboratory
    Young men friends arm wrestling — Stock Photo
    Young men friends arm wrestling
    Front view close up of a Caucasian teenage girl sitting at a desk in a school classroom looking out of the window, with classmates sitting at desks in the background — Stock Photo
    Front view close up of a Caucasian teenage girl sitting at a desk in a school classroom looking out of the window, with classmates sitting at desks in the background
    College students texting with cell phone — Stock Photo
    College students texting with cell phone
    Happy female friends studying — Stock Photo
    Happy female friends studying
    Portrait of a student in a computer lab — Stock Photo
    Portrait of a student in a computer lab
    Male students enjoying cooking class in kitchen — Stock Photo
    Male students enjoying cooking class in kitchen
    Teenage girls studying on bed — Stock Photo
    Teenage girls studying on bed
    Eager junior high school students with hands raised in classroom — Stock Photo
    Eager junior high school students with hands raised in classroom
    Teacher standing with student — Stock Photo
    Teacher standing with student
    Teacher talking with students in classroom — Stock Photo
    Teacher talking with students in classroom
    Girl with classmates stirring a beaker with yellow liquid — Stock Photo
    Girl with classmates stirring a beaker with yellow liquid
    Smiling friends discussing notes — Stock Photo
    Smiling friends discussing notes
    Front view of a young African schoolboy sitting at his desk, raising his hand to answer a question during a lesson in a township elementary school classroom, in the foreground two schoolgirls are listening attentively — Stock Photo
    Front view of a young African schoolboy sitting at his desk, raising his hand to answer a question during a lesson in a township elementary school classroom, in the foreground two schoolgirls are listening attentively
    Side view close up of a teenage mixed-race boy 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 close up of a teenage mixed-race boy in a school classroom sitting at desk, concentrating, with teenage male and female classmates sitting at desks working in the background
    Wniversity students discussing by whiteboard — Stock Photo
    Wniversity students discussing by whiteboard
    Portrait smiling, confident girl students researching at computer in library — Stock Photo
    Portrait smiling, confident girl students researching at computer in library
    Chinese children painting in art class with teacher — Stock Photo
    Chinese children painting in art class with teacher
    Little girls on morning prayer — Stock Photo
    Little girls on morning prayer
    Teenage girls practicing experiment while standing in lab — Stock Photo
    Teenage girls practicing experiment while standing in lab
    Enthusiastic female teacher and junior high school students in classroom — Stock Photo
    Enthusiastic female teacher and junior high school students in classroom
    Chinese rural female teacher and pupils smiling at camera in the classroom — Stock Photo
    Chinese rural female teacher and pupils smiling at camera in the classroom
    Community college journalism students at microphone in classroom — Stock Photo
    Community college journalism students at microphone in classroom
    Junior high students using computers and watching teacher at projection screen in classroom — Stock Photo
    Junior high students using computers and watching teacher at projection screen in classroom
    Students watching male paragliding instructor with equipment on sunny beach — Stock Photo
    Students watching male paragliding instructor with equipment on sunny beach
    Teenage girl holding book — Stock Photo
    Teenage girl holding book
    Cheerful young multiracial female friends enjoying free time in street — Stock Photo
    Cheerful young multiracial female friends enjoying free time in street
    Junior high students studying — Stock Photo
    Junior high students studying
    Students and teachers walking outdoors — Stock Photo
    Students and teachers walking outdoors
    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
    Side view of African American teenage girl and a Caucasian teenage boy high school student in an empty school theatre during rehearsals for a performance, standing on the stage holding scripts and practicing their parts — Stock Photo
    Side view of African American teenage girl and a Caucasian teenage boy high school student in an empty school theatre during rehearsals for a performance, standing on the stage holding scripts and practicing their parts
    African american student using world map in class — Stock Photo
    African american student using world map in class
    Students studying at desk in classroom — Stock Photo
    Students studying at desk in classroom
    College students using digital tablet walking in corridor — Stock Photo
    College students using digital tablet walking in corridor
    Portrait confident college students in lobby — Stock Photo
    Portrait confident college students in lobby
    Young asian college students studying together — Stock Photo
    Young asian college students studying together
    Teacher and curious students at interactive earth exhibit in science center — Stock Photo
    Teacher and curious students at interactive earth exhibit in science center
    Students and teacher walking in forest — Stock Photo
    Students and teacher walking in forest
    Rear view of a young African schoolchildren raising their hands to answer a question to the female teacher standing at the front of the class by the blackboard during a lesson in a township elementary school classroom — Stock Photo
    Rear view of a young African schoolchildren raising their hands to answer a question to the female teacher standing at the front of the class by the blackboard during a lesson in a township elementary school classroom
    Friends at table in cafe — Stock Photo
    Friends at table in cafe
    Group of boys and girl in computer class working at monitors. — Stock Photo
    Group of boys and girl in computer class working at monitors.
    Front view of a multi-ethnic group of teenage school pupils sitting at desks in a classroom and raising their hands — Stock Photo
    Front view of a multi-ethnic group of teenage school pupils sitting at desks in a classroom and raising their hands
    Chinese children practicing Taekwondo stance with instructor — Stock Photo
    Chinese children practicing Taekwondo stance with instructor
    Rear view close up of two young African schoolgirls sitting at their desk whispering to each other during a lesson in a township elementary school classroom — Stock Photo
    Rear view close up of two young African schoolgirls sitting at their desk whispering to each other during a lesson in a township elementary school classroom