Hours of Operation

8:00am to 2:00pm by Appointment OnlyMonday through Friday

The Dohrn Office is open by appointment only for registration or course material pick-up. Please do not come to the office without scheduling an appointment, as the office is not always open.

Holidays

On the following days, our office will be closed or will have an early closing time.

Wednesday, January 1, 2025 New Year's Day Closed
Friday, April 18, 2025 Good Friday Early Closing Time: 12:00 PM
Friday, May 23, 2025 Early Closing Time: 12:00 PM
Monday, May 26, 2025 Memorial Day Closed
Thursday, July 3, 2025 Early Closing Time: 12:00 PM
Friday, July 4, 2025 Independence Day Closed
Friday, August 29, 2025 Early Closing Time: 12:00 PM
Monday, September 1, 2025 Labor Day Closed
Wednesday, November 26, 2025 Early Closing Time: 12:00 PM
Thursday, November 27, 2025 Thanksgiving Closed
Friday, November 28, 2025 Closed
Wednesday, December 24, 2025 Christmas Eve Closed
Thursday, December 25, 2025 Christmas Closed
Wednesday, December 31, 2025 New Year's Eve Early Closing Time: 12:00 PM
Thursday, January 1, 2026 New Year's Day Closed

Office

8517 West Grand Avenue
Unit C
River Grove, Illinois 60171

We are located about eleven miles west of Downtown Chicago, 8517 West and about 2600 North, a little more than one block west of Cumberland Avenue (1st avenue is the same street as Cumberland and in River Grove it is called Thatcher Avenue). We are four miles north of the Eisenhower (290) Expressway (1st Avenue North Exit) and just over three miles south of the Kennedy (90) Expressway (Cumberland South exit). We are directly behind 8515 W. Grand Avenue which is a State Farm office and directly west of the River Grove Bowl.

Terms and Conditions