Principal's Page

Phone: 630-795-6300


Degrees and Certifications:

Dr. Donald Mrozik


Welcome to John L. Sipley School!  John L. (Jack) Sipley was a remarkable man and his love and dedication to our youth is something that inspires me and deepens my commitment to the mission of serving the students of John L. Sipley School.


The academic success of each student is our number one priority!  Our school is guided by two important facets of learning: relationships are the key to learning and we work toward proficiency of standards and beyond through the use of formative assessment for purposeful instruction. Sipley teachers will employ a variety of instructional techniques and incorporate the latest technology tools to help prepare your child for 21st-century expectations.


As mentioned, relationships are key to learning. We will provide a safe learning environment for each child, free from intimidation, harm, and bullying. We are a CHAMPS School.  I invite you to read more about CHAMPS under the tab, School Expectations.  We teach social skills such as problem-solving, empathy, and assertive voice through our “Second Step” curriculum, along with the incorporation of team meetings using resources from “Caring School Communities.” We help students to become proactive rather than reactive with their social interactions. Students at Sipley have adult advocates or mentors available to them when in need.


I am committed to serving our students, parents, and staff of John L. Sipley School. Please feel free to contact me with any concerns or questions that you may have.


For your child,


Dr. Donald R. Mrozik, Jr.