2550 Harnish Drive, Algonquin, IL 60102
Phone: 847.551.8300
8am to 4:30pm Monday through Friday most of the year. During summer, winter, and spring breaks, the office will open and close one hour early (7am to 3:30pm).
Stay informed of the latest D300 back to school information this summer by visiting d300.org/BackToSchool.
1/13/2025
Independence Day - Offices/Schools Closed
Summer Communication: Back to School Requirements
6:30 PM - 8:00 PM Board of Education Meeting
Summer Communication: Back to School Center
8:00 AM - 3:00 PM Teacher Institute (No Student Attendance)
Summer Communication: Notable Changes / Essential Information
First Day of School (Full Day of Student Attendance)
Summer Communication: Communication Guidelines