6+boys, 6+girls, arms behind back, bag, black eyes, black pants, black sailor collar, black skirt, black socks, blonde hair, bob cut, brown footwear, brown pants, cabinet, ceiling light, chair, chalkboard, classroom, collared shirt, desk, door, eraser, faceless, faceless female, faceless male, from outside, holding, holding pen, indoors, long hair, looking outside, looking to the side, multiple boys, multiple girls, pants, paper, pen, sailor collar, school, school bag, school chair, school desk, school uniform, shadow, shirt, shoes, short hair, short sleeves, skirt, sleeping, socks, solo focus, summer uniform, teacher, teacher and student, test, uwabaki, walking, white footwear, white shirt, window, writing