noun
A school document showing a student's grades and teacher comments, typically issued at the end of each term.
通知表をもらったら、まず親に見せなさい。
When you get your report card, show it to your parents first.
通知表の成績が上がって、嬉しかった。
I was happy that my grades on the report card went up.
成績表 is a more general term for a grade report or transcript, not limited to school report cards. 通知表 specifically refers to the periodic school report card.
Compound of 通知 (notification, notice) and 表 (chart, table). The alternate form 通知票 uses 票 (slip, ticket), emphasizing the document as a slip of paper.