Phone: 630-551-9810


Degrees and Certifications:

Mrs. Samantha Sinovich


I am very excited to be the proud Principal of our Southbury Shark family! Go Sharks! I began my teaching career as an elementary teacher in Palos Heights.  In the summer months, I worked for Parkland College for the Illinois Migrant Program as a reading specialist/teacher evaluator.  I was previously the Assistant Principal at Old Post Elementary School for 4 school years. 

I attended the University of Illinois Urbana-Champaign obtaining a bachelor's degree in Elementary Education.  I continued my education by obtaining my master's degree as a Reading Specialist and my second master's degree in Educational Leadership, both through Olivet Nazarene University. I also attended Lewis University for my LBS1 Special Education Endorsement.   

District 308 is a wonderful school district and I am fortunate to be part of the family! 

Phone: 630-551-9811


Degrees and Certifications:

Ms. Jill Decker

I am proud to serve as the  Assistant Principal at Southbury Elementary. In my tenure in education, I have served in many capacities. In 1998, I began my career in SD 308 as a fifth grade teacher at Eastview Elementary. During my time in SD308, I taught kindergarten, third grade and fifth grade in various buildings. From 2005-2008,  I had the privilege of serving as the Assistant Principal at Wolf’s Crossing Elementary.  In 2008, I moved to Southbury as a classroom teacher and remained at Southbury until 2015, when I relocated to Las Vegas, Nevada. In Nevada, I had the opportunity to teach kindergarten, first grade and special education preschool.

Phone: 630-551-9863


Degrees and Certifications:

Miss Sarah Commike

It is with honor and great excitement that I rejoin the Southbury Team as the  Program Administrator.  This year, I will be assisting the school’s administrative team with the special education program for the entire building and directly supporting the STARS’ Program.  My passion for working with students in education has been driven by my commitment to making a positive difference in the lives of children.

Although I started in the Oswego School District in 2018 as a Coordinator/Program Administrator, I have been in the education field for over 19 years working with students in special education. I began my career in education to help children learn and fell in love with teaching. As I gained experience as a special education teacher, I realized that not only did I have a passion for teaching students, but also helping teachers. This passion led me back to school to gain my masters degree in Educational Administration. As an administrator, I have worked as a Coordinator in both public schools and private therapeutic day schools to support students and teachers within special education.  

In each of my roles, I have sought to ensure the success of each student.  My most rewarding moments as a teacher and as an administrator have always involved working in close partnership with families, students, and other professionals to create meaningful experiences and positive outcomes for students and families.  I believe that it takes a partnership of committed administrators, teachers, parents, support staff and students for children to reach their greatest potential and become lifelong learners.