grades

Etymology

noun

1. plural of grade

noun

1. Grammar school, primary school, or the years of school prior to high school.
   I planned to have each girl, as soon as she had finished the grades, spend a year at home with me. Before going on to high school my girls were to take a year off, to assume the responsibility with me as chief adviser or prime ministers. 1926, Agnes Bostonne, “A Mother's Success Depends on her Daughters”, in Relief Society Magazine

verb

1. third-person singular simple present indicative of grade