Principal, Mrs. Michelle Ostrosky

Principal, Mrs. Michelle Ostrosky

Mrs. Ostrosky is currently a principal at Trinity Middle School.  In this position, Mrs. Ostrosky is responsible for staff and student supervision, creating and implementing building achievement plans, as well as district and curriculum goals specifically in the area of Language Arts. Mrs. Ostrosky began her teaching career at Trinity East Elementary where she taught Title I reading and kindergarten.  She spent a few years as the literacy coach at the building before going back into the classroom as a full-day kindergarten teacher.  She then accepted the positions as Trinity South Principal and Federal Coordinator for the district in 2009 In her early years of teaching, Mrs. Ostrosky coached and umpired for girls softball both at Trinity and in the community for TWIST. She served as a member of Keystone Corner Reading Council, Past-President and member of ADK Teacher’s Sorority, PAESP/NAESP, South PFC, an associate member of PSBA and is active with local charities.  She enjoys spending time with her family and friends, as well as coaching once again for her daughter’s softball team.    Professionally, Mrs. Ostrosky currently serves on several state committees for the state assessments in the areas of reading and writing.  She was instrumental in the creation of the first third grade PSSA assessment serving on the state Task Force and became a trainer for school districts and parent associations around the Commonwealth.  Mrs. Ostrosky was also a Governor’s Institute Instructor working with educators in the area of curriculum.  In 2002, Mrs. Ostrosky was named a Teacher of Distinction by the Teacher Excellence Foundation.Mrs. Ostrosky obtained her Bachelor of Science Degree with a certification in elementary education from California University of PA.  As a graduate student, she also received a Master’s Degree in Education as a reading specialist from California University of PA and went on to obtain her certificate in administration. Mrs. Ostrosky is happily married to her husband Joe. They have two girls, Bekah and Jorjah and one cat.  The couple resides in Hempfield Township in Greensburg.

Principal, Mr. Paul Kostelnik

Principal, Mr. Paul Kostelnik

Mr. Kostelnik is a 1996 graduate of Chartiers-Houston High School where he attended since kindergarten.  After graduation, Mr. Kostelnik accepted an Athletic/Academic Scholarship to Westminster College where he played football and majored in Business Administration with a concentration in Financial Economics.  Mr. Kostelnik accepted a position as a Financial Advisor/Analyst with AXA-Advisors the day after he graduated from college in May 2000.  During his time with AXA-Advisors, Mr. Kostelnik coached football at Chartiers-Houston, his alma mater, for 5 years.  It was at this time he realized he should have been an educator and enrolled at California University of PA.  Mr. Kostelnik received his Masters of Arts in Teaching, certified in Mathematics 7-12, in December 2005. 

Mr. Kostelnik’s first teaching job was at Northgate High School.  This is where he taught Algebra II and PSSA Prep.  The summer of 2006 Mr. Kostelnik was hired at Washington School District and taught Mathematics for 7 years.  In 2013 Mr. Kostelnik was hired as an administrator and worked in Washington’s central office where created and ran their cyber program.  Mr. Kostelnik was also the districts PIMS Administrator and Child Accounting Supervisor during this time.  During the first 9 years at Washington, Mr. Kostelnik also coached football every year and baseball for 5 years.  The last two years Mr. Kostelnik has been the High School Principal and cyber school coordinator grades K-12. 

Mr. Kostelnik has been happily married to his wife Stacey for nine years who is a MRI Technologist for IRG in Pittsburgh.  They have two sons together Chase (8) and Colt (6) who attend Canon-McMillan School District.

Mr. Kostelnik is very excited to join Trinity School district as a Middle School Principal.  “I’m very excited to bring a strong work ethic and high character to an already successful school and district.” “My goal as a principal is to ensure that every student that enters through our doors gets the best education possible to ensure they can be as successful as possible when they exit them.”