Call either one of these two numbers and follow the directions below.
815-206-3787 & 815-206-3788.
When you start hearing the recording, press the asterisks (*) key and you'll be prompted for your mailbox number. Enter that number and you'll hear the greeting. Interrupt the greeting with the asterisks (*) key again and you'll be prompted with the passcode. Enter passcode and you should hear the familiar voice from the voicemail system.
The link below will provide you with mailbox numbers for the district. The attendance line and main information line for each school are different than the extension. Check the list for the exact mailbox number.