Stock photography, photos: 7th grade science class Stock photos of Education Multi ethnic students in 7th grade science class Photograph: © Bill Bachmann Click for a larger image and more information Keywords associated with this stock photo: learn, learning, students, boy, girl, African-American, Negro, black, Caucasian, white, microscope, sponge, coral, science, biology, study, studying, examine, notes, magnify, cell, cells, structure, grow, life, living, ethnic divesity,ethnically diverse,lifestyle