noun, noun which may take the genitive case particle 'no'
school class; homeroom class
Refers to the organizational unit of students in a school, typically a homeroom class. Often used in educational contexts.
クラス is a more general loanword for 'class' (e.g., a course, a group of students), while 学級 specifically refers to the homeroom class unit in a school.
Compound of 学 (study, learning) and 級 (grade, rank), referring to a graded class in a school.