Oct & Dec classes. Save money on your car insurance! If you have taken the state-approved, 8-hour Defensive Driving Course for 55+, now you can renew your 10%, three year car insurance discount by taking this new, state-approved 4-hour refresher course. You will receive a certificate of completion to provide to your insurance company. Bring your driver's license with you to class. Daytime class is held at Ridgedale YMCA, 12301 Ridgedale Drive Minnetonka. Evening class is held at Central Middle School, 301 Vicksburg Lane Plymouth.