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    First-aiders practicing cardiopulmonary resuscitation on training dummy. — Stock Photo
    First-aiders practicing cardiopulmonary resuscitation on training dummy.
    Junior high students descending stairs — Stock Photo
    Junior high students descending stairs
    Two students talking in university yard with cup of coffee — Stock Photo
    Two students talking in university yard with cup of coffee
    Students at computers in adult education classroom — Stock Photo
    Students at computers in adult education classroom
    Young Chinese women learning flower arrangement with art teacher — Stock Photo
    Young Chinese women learning flower arrangement with art teacher
    School classroom full of pupils — Stock Photo
    School classroom full of pupils
    Professor discussing sensors and thermostats with students in an HVAC classroom — Stock Photo
    Professor discussing sensors and thermostats with students in an HVAC classroom
    Girl drawing bar graph — Stock Photo
    Girl drawing bar graph
    Young friends college students studying using laptop at table — Stock Photo
    Young friends college students studying using laptop at table
    Young woman feeding boyfriend cereal in apartment kitchen — Stock Photo
    Young woman feeding boyfriend cereal in apartment kitchen
    High angle view of university students having lunch — Stock Photo
    High angle view of university students having lunch
    Students examining liquids in test tube rack, conducting scientific experiment in laboratory classroom — Stock Photo
    Students examining liquids in test tube rack, conducting scientific experiment in laboratory classroom
    Schoolgirl raising hand — Stock Photo
    Schoolgirl raising hand
    Young women sitting on sofa — Stock Photo
    Young women sitting on sofa
    Three female students playing piano, clarinet and violin in a studio — Stock Photo
    Three female students playing piano, clarinet and violin in a studio
    Male doctors practicing tracheal intubation on training dummy. — Stock Photo
    Male doctors practicing tracheal intubation on training dummy.
    Junior high students talking at stairs — Stock Photo
    Junior high students talking at stairs
    Schoolkids using mobile phone in school campus on a sunny day — Stock Photo
    Schoolkids using mobile phone in school campus on a sunny day
    College students discussing homework in stairway — Stock Photo
    College students discussing homework in stairway
    Cheerful young diverse female friends celebrating meeting in city — Stock Photo
    Cheerful young diverse female friends celebrating meeting in city
    Front view of a young Caucasian female fashion student standing with arms crossed in a studio at fashion college — Stock Photo
    Front view of a young Caucasian female fashion student standing with arms crossed in a studio at fashion college
    Outdoor activities for rural female teacher and students — Stock Photo
    Outdoor activities for rural female teacher and students
    Smiling female college student texting in corridor — Stock Photo
    Smiling female college student texting in corridor
    Side view of a mixed race teenage boy and African American teenage girl high school student sitting on chairs in an empty school theatre preparing before a performance, holding scripts and rehearsing together — Stock Photo
    Side view of a mixed race teenage boy and African American teenage girl high school student sitting on chairs in an empty school theatre preparing before a performance, holding scripts and rehearsing together
    Students examining birdcage in classroom — Stock Photo
    Students examining birdcage in classroom
    Young multiracial couple having good time skateboarding — Stock Photo
    Young multiracial couple having good time skateboarding
    Student in wheelchair examining furnace ignitor in HVAC classroom — Stock Photo
    Student in wheelchair examining furnace ignitor in HVAC classroom
    Male chinese rural primary school teacher and pupils in classroom — Stock Photo
    Male chinese rural primary school teacher and pupils in classroom
    Caucasian girl studying while sitting on her desk in the class at school. school and education concept — Stock Photo
    Caucasian girl studying while sitting on her desk in the class at school. school and education concept
    University students practicing science experiment in lab — Stock Photo
    University students practicing science experiment in lab
    High angle view of a multi-ethnic group of teenage concentrating pupils sitting at desks in class studying at school in a high school — Stock Photo
    High angle view of a multi-ethnic group of teenage concentrating pupils sitting at desks in class studying at school in a high school
    A group of friends on the beach gather their pieces of watermelon — Stock Photo
    A group of friends on the beach gather their pieces of watermelon
    Two students standing by railing in front of lockers with coffee — Stock Photo
    Two students standing by railing in front of lockers with coffee
    Young female friends discussing notes — Stock Photo
    Young female friends discussing notes
    Girl looking at female friend — Stock Photo
    Girl looking at female friend
    Teacher calling on students with hands raised in adult education classroom — Stock Photo
    Teacher calling on students with hands raised in adult education classroom
    Teacher assisting university students in their studies in classroom — Stock Photo
    Teacher assisting university students in their studies in classroom
    Smiling college students talking in corridor — Stock Photo
    Smiling college students talking in corridor
    College students studying together — Stock Photo
    College students studying together
    Children near school smiling at camera — Stock Photo
    Children near school smiling at camera
    Instructor discussing air conditioner recharging with students in HVAC classroom one student in wheelchair — Stock Photo
    Instructor discussing air conditioner recharging with students in HVAC classroom one student in wheelchair
    Junior high students using computers in computer lab — Stock Photo
    Junior high students using computers in computer lab
    Curious students conducting scientific experiment, examining liquid in beaker in laboratory classroom — Stock Photo
    Curious students conducting scientific experiment, examining liquid in beaker in laboratory classroom
    Rural female teacher and pupils using laptop computer together in school — Stock Photo
    Rural female teacher and pupils using laptop computer together in school
    Young asian college students studying together against campus — Stock Photo
    Young asian college students studying together against campus
    Smiling boy reading book — Stock Photo
    Smiling boy reading book
    High school students talking and studying at table in classroom — Stock Photo
    High school students talking and studying at table in classroom
    Chef and students with Down Syndrome using digital tablet in kitchen — Stock Photo
    Chef and students with Down Syndrome using digital tablet in kitchen
    Cheerful young diverse female friends celebrating meeting in city — Stock Photo
    Cheerful young diverse female friends celebrating meeting in city
    Back view of Affectionate young friends with backpacks hugging — Stock Photo
    Back view of Affectionate young friends with backpacks hugging
    Male teacher teaching students in the classroom at school — Stock Photo
    Male teacher teaching students in the classroom at school
    Front view of a young African American female fashion student talking on a smartphone in a studio at fashion college, with other students working in the background — Stock Photo
    Front view of a young African American female fashion student talking on a smartphone in a studio at fashion college, with other students working in the background
    Female entrepreneurs working in home office — Stock Photo
    Female entrepreneurs working in home office
    Students and teachers smiling in forest — Stock Photo
    Students and teachers smiling in forest
    Students reading book on steps — Stock Photo
    Students reading book on steps
    Front view close up of a middle aged African female school teacher standing at the front of the class in front of the blackboard and leaning forward to watch her pupils writing at their desks during a lesson in a township elementary school classroom — Stock Photo
    Front view close up of a middle aged African female school teacher standing at the front of the class in front of the blackboard and leaning forward to watch her pupils writing at their desks during a lesson in a township elementary school classroom
    Female teacher in hijab leading lesson, calling on students in classroom — Stock Photo
    Female teacher in hijab leading lesson, calling on students in classroom
    Multi ethnic group of elementary school children sitting at desks wearing face masks in classroom. Primary education social distancing health safety during Covid19 Coronavirus pandemic. — Stock Photo
    Multi ethnic group of elementary school children sitting at desks wearing face masks in classroom. Primary education social distancing health safety during Covid19 Coronavirus pandemic.
    Students in a classroom — Stock Photo
    Students in a classroom
    Teacher and african american student hugging in class — Stock Photo
    Teacher and african american student hugging in class