School Resource Officers

Each District 155 school has a school resource officer (SRO), a police officer who has undertaken training specific to working in a school setting. For our schools, the SROs are full-time members of the Crystal Lake or Cary Police Department. These police officers are present to secure our buildings, investigate incidents at the school, and maintain order. 

Officer Kendall

Tyler Kendall, Crystal Lake South High School Tyler Kendall is the School Resource Officer (SRO) at Crystal Lake South High School and has been assigned to this position since October 2019. Additionally, he has served as a member of the Crystal Lake Police Department for 5 years. Officer Kendall is a certified Juvenile Officer, Evidence Technician, Spanish Language Translator, and member of the McHenry County Juvenile Officers Association. Officer Kendall is a District 155 graduate of Prairie Ridge High School and graduated from Western Illinois University, where he earned a Dual Bachelor's Degree in Law Enforcement & Justice Administration and Spanish with a minor in Homeland Security. Officer Kendall enjoys spending time with his family and two rescue dogs.

Officer Boulahanis

Dimitri Boulahanis, Crystal Lake Central High School
Dimitri Boulahanis is the SRO at Crystal Lake Central High School. He has been a police officer with the City of Crystal Lake since Jan 3, 2000. Prior to becoming SRO he was assigned to the criminal investigations unit (CIU) for 4 years and prior to that, he spent 5 years with the Target Response Unit (specializing in drug/gang cases). SRO Boulahanis is a Certified Juvenile Police Officer, Homicide Investigator, Hostage Negotiator, and is a part of the McHenry County Gang Task Force, as well as the Illinois Drug and Gang Officers Association. During his downtime he enjoys spending time with his family, playing soccer with his son and working on his next dad joke to share.  

Justin Rueff, Prairie Ridge High School
Justin Rueff is the School Resource Officer (SRO) at Prairie Ridge High School, and began serving as an SRO in August, 2022. Officer Rueff began his law enforcement career in 2016, and he currently serves as an officer with the Crystal Lake Police Department. As a member of the McHenry County Juvenile Officers Association and as a Certified Juvenile Officer, he has a passion to improve the lives of the students he serves. Officer Rueff is a District 155 graduate of Crystal Lake Central High School, and is a college graduate of Indiana University-Purdue University Indianapolis. In his free time, Officer Rueff most enjoys spending time with his family. 


Paul Fatzinger, Cary-Grove High School
Paul Fatzinger is the School Resource Officer (SRO) at Cary-Grove High School, and serves as a detective with the Cary Police Department. He has over ten years of experience as a police officer, and began serving as SRO in August 2018. Fatzinger received his associates from McHenry County College (MCC). He is a certified juvenile officer, homicide investigator, field training officer, and patrol officer in charge. Fatzinger is trained for mental health related crisis intervention and rapid deployment/active shooter training as well.