"試験" (しけん) means an exam, test, or examination. It's a formal assessment designed to measure a person's knowledge, skill, or aptitude in a particular subject. Students often take many "試験" throughout their academic careers. For example, "来週、日本語の試験があります" (There is a Japanese test next week).

知識や能力を測るためのテストです。学校や資格で受けます。例：入学試験。