noun
test, class test
B1
Means 'test' or 'class test' at school. Feminine noun (die Klassenarbeit) with regular plural Klassenarbeiten. Refers usually to a formal written in-class exam. No special preposition. Common in school contexts; often used to distinguish between quizzes, oral exams, and longer written assessments.
Examples
Die Klassenarbeit dauert eine Stunde und umfasst fünf Aufgaben.
The class test lasts an hour and includes five tasks.
Morgen haben wir in Mathe eine Klassenarbeit.
We have a math test tomorrow.
Morgen schreiben wir eine Klassenarbeit in Mathematik.
Tomorrow we're having a test in mathematics.
Details
Mnemonics
imagine a classroom where the teacher hands out a paper titled 'Klassenarbeit'
think 'class + an + work' — a test given in class
Klassenarbeit is feminine: imagine the paper wearing a ribbon (like 'die' sounds like a small dress ribbon) — DIE Klassenarbeit
Notes
Refers specifically to a test given in class (often at school). Plural: Klassenarbeiten.