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    Redheaded boy using light microscope for studying on meadow. — Stock Photo
    Redheaded boy using light microscope for studying on meadow.
    Portrait of a young girl standing by a window holding the curtain — Stock Photo
    Portrait of a young girl standing by a window holding the curtain
    Adorable schoolgirl playing accordion in music school — Stock Photo
    Adorable schoolgirl playing accordion in music school
    Barn owl with pointed beak and ornamental plumage looking at camera on black background — Stock Photo
    Barn owl with pointed beak and ornamental plumage looking at camera on black background
    Rural female teacher and chinese pupils studying in the classroom — Stock Photo
    Rural female teacher and chinese pupils studying in the classroom
    Cute schoolchild with rucksack pouting lips while standing on brown background in studio and looking at camera — Stock Photo
    Cute schoolchild with rucksack pouting lips while standing on brown background in studio and looking at camera
    Front view of a multi-ethnic group of high school teenage male and female school pupils in a classroom, sitting at a table working together, looking at a laptop computer — Stock Photo
    Front view of a multi-ethnic group of high school teenage male and female school pupils in a classroom, sitting at a table working together, looking at a laptop computer
    From above cropped unrecognizable African American woman sitting at table and typing on laptop in light room — Stock Photo
    From above cropped unrecognizable African American woman sitting at table and typing on laptop in light room
    Human eye anatomy, computer illustration. — Stock Photo
    Human eye anatomy, computer illustration.
    Caucasian male teacher and students putting recyclable plastic items in tray at school. school and education concept — Stock Photo
    Caucasian male teacher and students putting recyclable plastic items in tray at school. school and education concept
    Boy with toy in classroom — Stock Photo
    Boy with toy in classroom
    Boy with toy in classroom — Stock Photo
    Boy with toy in classroom
    Portrait of smiling girl with arms crossed standing in front of blackboard in classroom — Stock Photo
    Portrait of smiling girl with arms crossed standing in front of blackboard in classroom
    Adorable schoolgirl playing violin in music school — Stock Photo
    Adorable schoolgirl playing violin in music school
    Close-up of teenage girl writing on blackboard in a classroom — Stock Photo
    Close-up of teenage girl writing on blackboard in a 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
    Side view of schoolgirl playing piano in music school — Stock Photo
    Side view of schoolgirl playing piano in music school
    Teacher helping young student — Stock Photo
    Teacher helping young student
    Optometrist specialist hand picking up lenses from case with several equipment — Stock Photo
    Optometrist specialist hand picking up lenses from case with several equipment
    Rural female teacher and happy chinese pupils in classroom — Stock Photo
    Rural female teacher and happy chinese pupils in classroom
    Trendy overjoyed kid in festive headgear and black clothes raising arms up smiling at camera while celebrating New Year against light blue background in studio — Stock Photo
    Trendy overjoyed kid in festive headgear and black clothes raising arms up smiling at camera while celebrating New Year against light blue background in studio
    Rural teacher reading book to pupils in outdoor learning — Stock Photo
    Rural teacher reading book to pupils in outdoor learning
    Schoolboy sitting on bench and talking on mobile phone during break — Stock Photo
    Schoolboy sitting on bench and talking on mobile phone during break
    Students in class raising hands — Stock Photo
    Students in class raising hands
    Happy female teenage student holding books on stairs — Stock Photo
    Happy female teenage student holding books on stairs
    Rural female teacher looking at chinese pupil in classroom — Stock Photo
    Rural female teacher looking at chinese pupil in classroom
    Caucasian boy sitting at desk wearing face mask in classroom. Primary education social distancing health safety during Covid19 Coronavirus pandemic. — Stock Photo
    Caucasian boy sitting at desk wearing face mask in classroom. Primary education social distancing health safety during Covid19 Coronavirus pandemic.
    Side view of two high school African American teenage female school pupils, using a smartphone and sitting on steps in the school grounds — Stock Photo
    Side view of two high school African American teenage female school pupils, using a smartphone and sitting on steps in the school grounds
    Girl sitting at table and browsing the cellphone while doing homework assignment at home — Stock Photo
    Girl sitting at table and browsing the cellphone while doing homework assignment at home
    Rural female teacher and pupils using laptop computer together in school — Stock Photo
    Rural female teacher and pupils using laptop computer together in school
    Positive cool preteen schoolboy in sunglasses and with rucksack looking at camera on brown background in studio — Stock Photo
    Positive cool preteen schoolboy in sunglasses and with rucksack looking at camera on brown background in studio
    Human eye anatomy, computer illustration. — Stock Photo
    Human eye anatomy, computer illustration.
    Close up image of child hands with a pile of colorful pencils — Stock Photo
    Close up image of child hands with a pile of colorful pencils
    Boy cleaning blackboard with a duster in a classroom — Stock Photo
    Boy cleaning blackboard with a duster in a classroom
    Little kid standing at blackboard — Stock Photo
    Little kid standing at blackboard
    Rural female teacher and chinese pupils using laptop computer together in school — Stock Photo
    Rural female teacher and chinese pupils using laptop computer together in school
    Group of school kids wearing protective mask to Protect Against Covid-19 with teacher sitting in classroom,education,elementary school,Social Distancing,learning and people concept. — Stock Photo
    Group of school kids wearing protective mask to Protect Against Covid-19 with teacher sitting in classroom,education,elementary school,Social Distancing,learning and people concept.
    Girl running through a corn field, USA — Stock Photo
    Girl running through a corn field, USA
    Pupils learning in classroom — Stock Photo
    Pupils learning in classroom
    Children working together in a classroom — Stock Photo
    Children working together in a classroom
    Mixed race boy wearing face mask, sitting on his desk during the lesson. Primary education social distancing health safety during Covid19 Coronavirus pandemic. — Stock Photo
    Mixed race boy wearing face mask, sitting on his desk during the lesson. Primary education social distancing health safety during Covid19 Coronavirus pandemic.
    Rural female teacher and chinese pupils in the classroom — Stock Photo
    Rural female teacher and chinese pupils in the classroom
    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
    Little boy hugging big hen — Stock Photo
    Little boy hugging big hen
    Human eyeball model, digital illustration. — Stock Photo
    Human eyeball model, digital illustration.
    Portrait of a young girl wearing make-up standing by a curtain — Stock Photo
    Portrait of a young girl wearing make-up standing by a curtain
    Rural female teacher and happy chinese pupils standing together in school yard — Stock Photo
    Rural female teacher and happy chinese pupils standing together in school yard
    Front view of a multi-ethnic group of teenage school pupils and their Caucasian male teacher standing in a classroom looking at laptop computers together, the pupils listening while the teacher talks — Stock Photo
    Front view of a multi-ethnic group of teenage school pupils and their Caucasian male teacher standing in a classroom looking at laptop computers together, the pupils listening while the teacher talks
    Young female rural teacher reading book to pupils in outdoor learning — Stock Photo
    Young female rural teacher reading book to pupils in outdoor learning
    Front view of a multi-ethnic group of high school teenage male and female school pupils in a classroom, sitting at a table working together, looking at a laptop computer — Stock Photo
    Front view of a multi-ethnic group of high school teenage male and female school pupils in a classroom, sitting at a table working together, looking at a laptop computer
    Trendy pleased child in New Year head wear and black clothes looking at camera and doing standing side split exercise against light blue background in studio — Stock Photo
    Trendy pleased child in New Year head wear and black clothes looking at camera and doing standing side split exercise against light blue background in studio
    Focused boy doing homework assignment while sitting near adult woman sewing garment at home — Stock Photo
    Focused boy doing homework assignment while sitting near adult woman sewing garment at home
    Attractive concentrated teenage female student taking notes for exam and drinking hot beverage while sitting on bed — Stock Photo
    Attractive concentrated teenage female student taking notes for exam and drinking hot beverage while sitting on bed
    Schoolboy playing with building blocks — Stock Photo
    Schoolboy playing with building blocks
    High angle view of rural female teacher and chinese pupils raising hands and smiling at camera in classroom — Stock Photo
    High angle view of rural female teacher and chinese pupils raising hands and smiling at camera in classroom
    3d illustration of cross-section of human eye in side view and frontal view. — Stock Photo
    3d illustration of cross-section of human eye in side view and frontal view.
    Caucasian male teacher teaching caucasian boy in the class at school. school and education concept — Stock Photo
    Caucasian male teacher teaching caucasian boy in the class at school. school and education concept
    Happy female teenage student holding books on stairs — Stock Photo
    Happy female teenage student holding books on stairs
    Little kid standing at blackboard in classroom — Stock Photo
    Little kid standing at blackboard in classroom
    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