Mercer Island School District Calendar 2025-26. High schools, thurgood marshall learning center and rock island high school Last day of class early dismissal (high school only) fourth grading period ends may 25:
The approved calendar closely resembles this. If additional days are needed for either students and/or staff, they will be added to the end of the school year accordingly.
Mercer Island School District Calendar 2025-26 Images References :