Mr. John Gustafson

(630) 894-4046


Mr. John Gustafson earned his Bachelor degree in Kinesiology from the University of Illinois at Chicago.  He continued his education and received Master’s degree in Educational Leadership from Aurora University in 2006.   

Mr. Gustafson has been in education for 23 years, all of them in Keeneyville District #20.  He began his career in 1996 as the physical education teacher at Greenbrook School.  He coached boys’ basketball at Spring Wood Middle School for 8 years. He became Assistant Principal of Greenbrook School in 2007.   In 2012 Mr. Gustafson became the Principal of Greenbrook School. 

Assistant Principal

Amanda Aubry

(630) 894-4638


Ms. Mandy Aubry received a Bachelor's degree in speech-language pathology from Augustana College in Rock Island, Illinois in 1998.  She received a Master's degree in speech-language pathology from St. Xavier University in Chicago in 2000 and a Master's degree in Educational Leadership from Aurora University.

Ms. Aubry was the speech-language pathologist for District 20's preschool programs for 16 years before she moved to the Administrator at the Early Childhood Center 4 years ago.  She has spent her entire career in District 20 preschool programs and enjoys all of the relationships that she has made with the students and their families. 

Watching preschool-aged children learn, grow, and experience things for the first time is something that Ms. Aubry will always enjoy.  She feels that it is a wonderful age of exploration and learning through play.  Knowing that preschool is usually a child's first school experience, and often the first time a child is away from his or her parents, Ms. Aubry and her staff work very hard to make this a positive experience for every child and their family as they lay the groundwork for the children's academic careers.  She is excited every day she comes to school and sees what new things and in what new ways our students learn and grow.