The quality of ability and work that is appropriate for students in a specified grade(adjective)
WordNet. Princeton University. 2010.
Use "grade-appropriate" in a sentence
"Yup, and Freshwater claims, implicitly or explicitly, to have taught grade-appropriate versions of all those."
"Mom and dad can search for, sample and purchase age or grade-appropriate audiobooks or choose titles by running time or category (classics & poetry, fables, study guides, etc.)."
"The answer: Simon & Schuster and BSU provide the author's books to a select group of teachers who then develop grade-appropriate activities for other teachers to use before the live broadcast."