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    Alphabet cards laying on teacher's desk. — Stock Photo
    Alphabet cards laying on teacher's desk.
    Two student friends, one Arab and one African-American, play with folders after class — Stock Photo
    Two student friends, one Arab and one African-American, play with folders after class
    Profile of boy using ipad tablet on the floor of his home — Stock Photo
    Profile of boy using ipad tablet on the floor of his home
    Asian girl reading and doing homework at her home — Stock Photo
    Asian girl reading and doing homework at her home
    School boy with globe — Stock Photo
    School boy with globe
    Young Chinese teacher introducing a new classmate in classroom — Stock Photo
    Young Chinese teacher introducing a new classmate in classroom
    Portrait confident young male college student in library — Stock Photo
    Portrait confident young male college student in library
    College professor leading lesson in classroom — Stock Photo
    College professor leading lesson in classroom
    Two students using digital tablet in classroom — Stock Photo
    Two students using digital tablet in classroom
    Focused high school boy student taking exam at desk in classroom — Stock Photo
    Focused high school boy student taking exam at desk in classroom
    Female teacher organizing letters on her board in her classroom. — Stock Photo
    Female teacher organizing letters on her board in her classroom.
    High school girl student doing homework at table in classroom — Stock Photo
    High school girl student doing homework at table in classroom
    Students in a classroom — Stock Photo
    Students in a classroom
    High school teacher supervising students taking exam at desks — Stock Photo
    High school teacher supervising students taking exam at desks
    55659 — Stock Photo
    55659
    The little girl in the painting in the kindergarten — Stock Photo
    The little girl in the painting in the kindergarten
    Boy cleaning blackboard with a duster in a classroom — Stock Photo
    Boy cleaning blackboard with a duster in a classroom
    Focused junior high boy student using computer in dark computer lab — Stock Photo
    Focused junior high boy student using computer in dark computer lab
    College students studying together in classroom — Stock Photo
    College students studying together in classroom
    Junior high students using computers in computer lab — Stock Photo
    Junior high students using computers in computer lab
    Community college instructor helping students at computers in computer lab classroom — Stock Photo
    Community college instructor helping students at computers in computer lab classroom
    Female community college students discussing paperwork in classroom — Stock Photo
    Female community college students discussing paperwork in classroom
    High school girl students studying in classroom — Stock Photo
    High school girl students studying in classroom
    High school teacher supervising students taking exam at desks — Stock Photo
    High school teacher supervising students taking exam at desks
    Womens support group meeting in circle — Stock Photo
    Womens support group meeting in circle
    Teacher supervising high school students taking exam at desks — Stock Photo
    Teacher supervising high school students taking exam at desks
    Focused high school girl student taking exam at desk in classroom — Stock Photo
    Focused high school girl student taking exam at desk in classroom
    Portrait of a girl sitting in classroom — Stock Photo
    Portrait of a girl sitting in classroom
    Girl student using microscope in classroom — Stock Photo
    Girl student using microscope in classroom
    Community college instructor helping students with paperwork in classroom — Stock Photo
    Community college instructor helping students with paperwork in classroom
    College students studying and talking in sunny classroom — Stock Photo
    College students studying and talking in sunny classroom
    Smiling female science teacher and girl student reading textbook at microscope in laboratory classroom — Stock Photo
    Smiling female science teacher and girl student reading textbook at microscope in laboratory classroom
    Train set on desk — Stock Photo
    Train set on desk
    Close-up of a boy writing on a blackboard in a classroom — Stock Photo
    Close-up of a boy writing on a blackboard in a classroom
    Smiling college students studying in classroom — Stock Photo
    Smiling college students studying in classroom
    High school girl student taking exam at desk — Stock Photo
    High school girl student taking exam at desk
    High school students talking in classroom — Stock Photo
    High school students talking in classroom
    High school boy student taking exam at desk in classroom — Stock Photo
    High school boy student taking exam at desk in classroom
    College students studying together in classroom — Stock Photo
    College students studying together in classroom
    Junior high students using computers in computer lab — Stock Photo
    Junior high students using computers in computer lab
    Boy student holding and examining molecular structure — Stock Photo
    Boy student holding and examining molecular structure
    Overhead view high school students taking exam at desks in classroom — Stock Photo
    Overhead view high school students taking exam at desks in classroom
    High school students and teacher clapping for student in debate class — Stock Photo
    High school students and teacher clapping for student in debate class
    Portrait confident, smiling female community college students with paperwork in classroom — Stock Photo
    Portrait confident, smiling female community college students with paperwork in classroom
    Female teacher and students examining DNA model in classroom — Stock Photo
    Female teacher and students examining DNA model in classroom
    Curious girl students conducting scientific experiment in laboratory classroom — Stock Photo
    Curious girl students conducting scientific experiment in laboratory classroom
    Male community college instructor leading lesson in classroom — Stock Photo
    Male community college instructor leading lesson in classroom
    College students using computer in library — Stock Photo
    College students using computer in library
    Female fashion designer with fabric in studio — Stock Photo
    Female fashion designer with fabric in studio
    Junior high girl student using computer in computer lab — Stock Photo
    Junior high girl student using computer in computer lab
    Male instructor leading lesson at projection screen in classroom — Stock Photo
    Male instructor leading lesson at projection screen in classroom
    Boy students conducting scientific experiment, examining liquid in test tube in laboratory classroom — Stock Photo
    Boy students conducting scientific experiment, examining liquid in test tube in laboratory classroom
    Young teacher helping students in classroom — Stock Photo
    Young teacher helping students in classroom
    Male community college instructor leading lesson at projection screen in classroom — Stock Photo
    Male community college instructor leading lesson at projection screen in classroom
    Girl student holding molecular structure at microscope in laboratory classroom — Stock Photo
    Girl student holding molecular structure at microscope in laboratory classroom
    Portrait confident young female community college student in classroom — Stock Photo
    Portrait confident young female community college student in classroom
    High school students talking during debate class in classroom — Stock Photo
    High school students talking during debate class in classroom
    Smiling girl conducting scientific experiment in laboratory classroom — Stock Photo
    Smiling girl conducting scientific experiment in laboratory classroom
    Portrait confident female student in library — Stock Photo
    Portrait confident female student in library
    High school teacher supervising students taking exam at desks — Stock Photo
    High school teacher supervising students taking exam at desks