Grain Valley 2025-26 School Calendar. Last day of class early dismissal (high school only) fourth grading period ends may 25: Issaquah's school calendar is established in cooperation with staff and the board of directors.

Early dismissal (high school only) may 22: Valley view elementary (opens in new window/tab) west elementary (opens in new window/tab) whittier elementary (opens in new window/tab) lead reduction in school drinking water.