Phone: 630-682-2474


Degrees and Certifications:

BS Elementary Education- NIU, Masters Early Childhood w/Special Education Endorsement- Dominican, ESL Endorsement and Masters in Administration- Aurora University

Ms. Cassi

My name is Cassi Williston.  I have been teaching for the past 31 years.  The past 19 years I have been teaching in District 200 in the Early Childhood Department.  My husband and I are both Wheaton North graduates. We have two daughters that also graduated from Wheaton North.  Our oldest attends Cherubim- a Developmental Day Program for adults with disabilities and our youngest is in her final year of Grad School at Carroll University. 
I enjoy reading, kayaking and spending time with family and friends.  This summer we welcomed Stein, a quarintine puppy to our family.
Speech and Language Pathologist- Nicole MacKinnon
Occupational Therapist-               Ashley Schneider AM
                                                     Deb Denniger PM
Physical Therapist-                       Sue Simnick
Teaching Assistants-                    Janice Jacklich AM
                                                     Patricia Wanzung AM
                                                     Karen Taylor PM
                                                     Kim Behrens AM & PM T&TH
                                                     Tuesday and Thursday
                                                     Jennifer Maison AM & PM W & F