MCPS Proposes Calendar Options for 2021-22 School Year Montgomery County Public Schools’ Policy Management Committee has proposed three calendar options for the upcoming 2021-2022 school year. The first two scenarios would require students to return to school before Labor Day and the third would begin the school year after the holiday weekend. If either of the first two options are approved, classes will begin Monday, Aug. 30 and end Tuesday, June 14. If the second option is approved, classes will begin Wednesday, Sept. 8 and end Tuesday, June 21. Each scenario would include 182 days of instruction, more than the minimum 180 days required by Maryland state law.