People:
* Students: pupil, scholar, learner, undergraduate, graduate, post-graduate, freshman, sophomore, junior, senior, classmate, schoolmate
* Teachers: instructor, professor, lecturer, tutor, educator, mentor, principal, headmaster, headmistress, superintendent, dean, TA (teaching assistant)
* Staff: librarian, counselor, janitor, custodian, administrator, secretary
Places:
* Buildings & Rooms: classroom, library, cafeteria, auditorium, gymnasium, laboratory, playground, campus, school, college, university, hall, dormitory, dorm
* Locations within a school: principal's office, nurse's office, computer lab
Things:
* Curriculum & Learning: lesson, subject, course, curriculum, textbook, assignment, homework, project, test, exam, quiz, grade, report card, syllabus, curriculum, lesson plan
* Supplies: pencil, pen, paper, book, notebook, ruler, eraser, backpack, laptop, computer, calculator
* Activities: class, lecture, study, research, extracurricular activities, sports, clubs, debate, drama, music
Concepts:
* Education: learning, knowledge, education, schooling, literacy, scholarship
* Administration: registration, enrollment, graduation, discipline, attendance, policy
Other:
* Terms: semester, term, quarter, year, bell, recess, break, vacation, holiday, scholarship, tuition, fees
This is not an exhaustive list, but it covers a wide range of words associated with school. The specific words that are most relevant will depend on the context.