noun, noun which may take the genitive case particle 'no'
advanced level; upper grade; high rank
Refers to a higher level in a hierarchy, such as language classes, school grades, job ranks, or difficulty tiers. Often used attributively with の.
彼は日本語の上級クラスにいる。
He is in the advanced Japanese class.
上級の役職に就くには経験
Experience is required to take a senior-level position.