School COMMENCEMENT is an important event in the academic year, typically held at the end of the SCHOOL year. It marks the end of the SCHOOL year and the beginning of summer vacation. The two crossword solutions for the term SCHOOL COMMENCEMENT are ESS (3 letters) and PRE (3 letters). ESS stands for End-of-SCHOOL-Semester and PRE stands for Pre-Graduation-Exercises. Both terms refer to the same event, which is the formal ceremony that marks the end of the SCHOOL year and the graduation of students.