Mathematics Department

Department Head: Brian Chelmecki

Department Phone: (630) 530-3961

Willowbrook Mathematics Department

Mission Statement:
       The Willowbrook Mathematics Department’s mission is to develop problem solvers that persevere, reason mathematically, attend to precision, and effectively communicate mathematics.

2025 Summer Work:  Below is a list of classes that require summer work to be completed by the 1st day of the 2025-2026 school year.  Click your class below to access the Summer Packet in pdf form.

Recommended Calculator By Course:  The following link shows the recommended calculator for each course at Willowbrook High School.

Name Phone Schedule Contact
Staff member Ryan Bazon photo
Ryan Bazon
Teacher
(630) 530-3961 View Ryan Bazon schedule Contact Ryan Bazon
Linda Behrendt
Teacher Aide
View Linda Behrendt schedule Contact Linda Behrendt
Staff member Steve Bridges photo
Steve Bridges
Teacher
(630) 530-3961 View Steve Bridges schedule Contact Steve Bridges
Staff member Jennifer Burns photo
Jennifer Burns
Teacher
(630) 782-3023 View Jennifer Burns schedule Contact Jennifer Burns
Staff member Brian Chelmecki photo
Brian Chelmecki
Math Department Head
(630) 782-3015 View Brian Chelmecki schedule Contact Brian Chelmecki
Staff member Andria Coletta photo
Andria Coletta
Teacher
(630) 530-3961 View Andria Coletta schedule Contact Andria Coletta
Staff member Edgar Dorado photo
Edgar Dorado
Teacher
(630) 458-4251 View Edgar Dorado schedule Contact Edgar Dorado
Staff member Elizabeth Hutchinson photo
Elizabeth Hutchinson
Teacher
(630) 782-3017 View Elizabeth Hutchinson schedule Contact Elizabeth Hutchinson
Staff member Marcia Ivancevic photo
Marcia Ivancevic
Department Secretary
View Marcia Ivancevic schedule Contact Marcia Ivancevic
Staff member Anna Lu photo
Anna Lu
Teacher
(630) 530-3961 View Anna Lu schedule Contact Anna Lu
Staff member Julie Rasso photo
Julie Rasso
Teacher
(630) 782-3026 View Julie Rasso schedule Contact Julie Rasso
Staff member Amanda Rohlfing photo
Amanda Rohlfing
Teacher
(630) 782-3027 View Amanda Rohlfing schedule Contact Amanda Rohlfing
Grace Rush
Teacher
(630) 782-3030 View Grace Rush schedule Contact Grace Rush
Molly Salerno
Teacher
(630) 782-3016 Contact Molly  Salerno
Staff member Carrie Skala photo
Carrie Skala
Teacher
(630) 782-2802 View Carrie Skala schedule Contact Carrie Skala
Staff member Gary  Strzelczyk photo
Gary Strzelczyk
Teacher
(630) 782-3020 View Gary  Strzelczyk schedule Contact Gary  Strzelczyk
Staff member Trudy Sulita photo
Trudy Sulita
Department Secretary
(630) 530-3729 View Trudy Sulita schedule Contact Trudy Sulita
Staff member Azahara Tello photo
Azahara Tello
Teacher
(630) 782-3018 View Azahara Tello schedule Contact Azahara Tello
Mary Kathryn Truman
Teacher
(630) 782-3028 Contact Mary Kathryn Truman
Staff member Elizabeth Zwart photo
Elizabeth Zwart
Teacher
(630) 782-3029 View Elizabeth Zwart schedule Contact Elizabeth Zwart
Staff member Josh Zwart photo
Josh Zwart
Teacher
(630) 782-3025 View Josh Zwart schedule Contact Josh Zwart