grader
n.a student in a specific year of school. You use this to describe someone's level, like a 'fifth grader' or a 'tenth grader'.
n.a student in a specified year of primary or secondary education. Often modified by an ordinal number to indicate the specific level of schooling.
“My younger brother is a fourth grader this year.”
“The teacher noticed that the third grader was already reading books meant for much older students.”
“While the curriculum is designed for the average seventh grader, advanced learners are often given supplemental materials to ensure they remain engaged throughout the semester.”
Commonly used in North American English; typically preceded by an ordinal number or a number word.
From grade + -er (agent noun suffix) or + -er (measurement suffix) (sense 4).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.