The phrase "graded period" refers to a specific length of time during which evaluations or assessments are given to determine and measure a person's performance or progress. Full definition
In fact, the first grading period is officially over for my kids. (babybunching.com)
Because of the calendar, students know what they will be tested on and when, when projects will be due, and when the six - week grading period begins and ends. (educationworld.com)
At that time, parents, teachers, and students review strengths and needs and set goals for the upcoming grading period. (educationworld.com)