Faculty / Staff Contacts

Julie Onacila
Onacila, Julie

School Principal – Miss Julie Onacila

I have called Saint Brendan my home for 19 years and have been in Catholic education for 30 years.  It is a true blessing to part of a welcoming and nurturing Catholic school and parish family.  Sharing this vocation with a team of dedicated faculty and staff, who firmly believe in the mission, of what they are doing is a gift.  Having a pastor, that actively supports the school contributes to the overall warm and positive atmosphere.  Being able to work with students through teaching, moderating the Liturgy Club, substituting on occasion, counseling, visiting them in the classroom, and other capacities enables me to keep the mission of what our school encompasses is what I value most.  

Tammy Dobrzeniecki
Dobrzeniecki, Tammy

School Secretary – Mrs. Tammy Dobrzeniecki

Hello from Tammy Dobrzeniecki, alias Mrs. D., school secretary.  This name was chosen for me when I started working in Catholic education in 1999…it made it easy for students and parents to pronounce, plus it was less formal.  My career started at the school that my children attended and I have been in love with the experience ever since!!  Being able to incorporate prayer, learning and fun have stuck with me since I was in Catholic grade school and high school.  I am blessed that God’s direction led me to St. Brendan in 2014.  There is a true sense of unity, faith and togetherness that can be felt when you enter our doors.  

Charlotte Thomas
Thomas, Charlotte
Preschool & Physical Education

3’s & 4’s Pre-Kindergarten Teacher/Physical Education K-8 - Ms. Charlotte Thomas: 

I have a BA Degree in Early Child Education, with a minor in Art and Graduate work in Family Counseling and Education. I have been working in a variety of early childhood education programs in the Cleveland area along with fitness, sports and physical education for 31 years. I have been teaching within the Cleveland Catholic Dioceses Education program for 4 years and my son attended 8 years of elementary school at St. Brendan School. I enjoy the family atmosphere, peace, and respect that the Catholic education offers as well as my co-workers within the school. I feel blessed to be part of the St Brendan Family. 
Libby Colborn
Colborn, Libby
Preschool Aide
Kerry McGovern
McGovern, Kerry

Kindergarten Teacher – Miss Kerry McGovern

I have been blessed to call St. Brendan’s my first school family as this is my second year as a full-time teacher and working in Catholic education. I chose Catholic education because I not only wanted to share my faith and Jesus’ word with my students, but also strengthen and grow my own personal relationship with God. My passions in teaching include seeing how much my student’s grow and progress over time, and watching their faces light up when they learn something new and exciting. I love being able to grow personal relationships with my students as well by getting to know their interests, and incorporating those interests into our daily lessons. I enjoy engaging my students in a variety of multimodal activities and providing them with a foundation for lifelong learning. 

Olivia Kostecke
Kostecke, Olivia
Grade 1

First-Grade Teacher - Olivia Kostecke:

I graduated from Wheeling Jesuit University in May 2003 with a BA in Liberal Arts/Education.  I taught First-Second grade for three years before getting my Masters in Education from Cleveland State University in 2006 and switching over to Special Education K-4 and then High School ED.  After taking a few years off of teaching to raise my own children, I returned back to educating, by substitute teaching, in both public and Catholic schools.  Ultimately, I made a decision to teach at St. Brendan School, as I am a product of 16 years of Catholic education and a strong believer in Catholic education.  Regardless, of the grades taught, my passion for teaching comes from that moment a child realizes they can do it and the sense of accomplishment they have in themselves.
Leanna Guelker
Guelker, Leanna
Grade 2

Second-Grade Teacher – Ms. Leanna Guelker

Hi! My name is Leanna Guelker. I am the second grade teacher at St. Brendan School. I have been a Catholic school teacher for 18 years. Being a teacher is one of my greatest joys! In my day to day lessons, I strive to find ways to incorporate activities that actively engage students in their learning that goes beyond the text book. When I am not in the classroom, I enjoy spending time with my three beautiful daughters Grace, Emma and Olivia. A year ago, I purchased a 128 year old house and in my spare time I enjoy working on renovation projects.

Daisy Johnson
Johnson, Daisy
Grade 4

Fourth-Grade Teacher – Mrs. Daisy Johnson

Hello! I am Daisy Johnson. I have been a part of the Saint Brendan Community since 2015. I currently teach fourth grade, and also third grade Reading. I have been a Catholic educator since 2002. I received a Masters’ Degree in Literacy Development in 2014. I am dedicated to helping students develop a love for reading. I enjoy using age appropriate picture books and novels of all genres to develop literacy skills. I serve as the co-coordinator for the Saint Brendan yearbook. In my free time I enjoy boating and hiking with my husband and my faithful companion, my golden retriever, Stella.

Sue Caroscio
Caroscio, Sue
Jr. High Religion / Grade 5 Homeroom

Fifth-Grade Homeroom & ELA/5th-8th Religion Teacher – Mrs. Sue Caroscio

Mrs. Sue Caroscio has been at St. Brendan since 2005 as a substitute and full time since 2018. She lives in Middleburg Heights, St. Bartholomew Parish, with her husband for over 35 years raising their three children. She, her husband, and children are all a product of the Catholic school system kindergarten through high school. She is deeply rooted in faith, community and Catholic education. 

Jenna Baechle
Baechle, Jenna
Jr. High Science / Grade 6 Homeroom

Sixth-Grade Homeroom/5th-8th Science – Miss Jenna Baechle 

As a Beaumont High School and University of Dayton alumnus, my educational background has been rooted in the faith. I have five years of experience teaching science, including the last three years at St Brendan School. I have always had an affinity for science because it is inquiry based and explains the world around us. As an educator, I am passionate about building student relationships and providing students with engaging and interactive learning experiences that will excite the students about the subject I love so much. In my classroom we explore the material, ask questions and share ideas with one another in a collaborative environment.

Emily Sinclair
Sinclair, Emily
Jr. High ELA Reading / Grade 7 Homeroom

Seventh-Grade Homeroom/6th-8th Grade English Language Arts – Mrs. Emily Sinclair

Mrs. Sinclair has been teaching at St. Brendan since 2018, and has taught for a total of eight years. She finds teaching in a Catholic school to be a delightful experience, and a familiar feeling since she attended St. Patrick West Park school and St. Joseph Academy. Mrs. Sinclair earned her Bachelor of the Arts from Cleveland State University and has completed some graduate courses. She loves St. Brendan’s small class sizes which allows her to learn more about her students on an individual level. Her favorite part of teaching is analyzing stories with students and bringing them to life in her classroom.

Ryan Schlitter
Schlitter, Ryan
Jr. High Math / Grade 8 Homeroom

Eighth-Grade Homeroom/5th-8th Math – Mr. Ryan Schlitter

Mr. Schlitter is the Junior High Math teacher, he has been a teacher at St. Brendan since the 2010-2011 School year. This is his thirteenth year in teaching all together. This is his second year teaching an enrichment class to grades K-8 once a week. He also has experience at St. Brendan teaching a high school level Algebra class for qualifying 8th graders and has taught grades 6-8 Religion in the past. Mr. Schlitter is certified to teach Social Studies and has a marketing degree from Kent State University. 
Noah Patera
Patera, Noah
Jr. Hgh Social Studies/Computer

Fifth-Eighth Grade Social Studies/K-8 Computer Technology - Mr. Noah Patera

Mr. Patera is the Junior High Social Studies and K-8 Computer teacher. He has 24 years of experience of which 22 have been here at Saint Brendan. Mr. Patera is a strong student advocate and firmly believes in individual student responsibility and encourages students to strive for continued growth in their faith and academics. Mr. Patera holds degrees from Cuyahoga Community College and Akron University. Outside of the classroom, he is involved in multiple vintage car clubs and continues to restore a few more classics. He also enjoys his time performing throughout the year and touring during the summers in his various bands and attending his children’s performances as well.

Mary Welch
Welch, Mary

Library/Maker Space – Mrs. Mary Welch

The 2020-21 school year marks my 4th year as the St. Brendan School Librarian. I teach weekly library classes to all grades that focus on fostering a love for reading, reinforcing literary skills, and encouraging critical thinking. I also have the pleasure to teach Maker Space classes, two days a week, to grades K-8, which are designed to give our students hands-on learning experience in a creative and collaborative setting. In both roles, one of the things I love most is watching and helping students discover new things – be it a book series that challenges them and lets their imagination take flight or the realization that they can successfully negotiate a complicated problem or a design challenge. As an added benefit, this all occurs within a supportive, faith filled environment in which kindness, respect, community, gratitude and a relationship with our Lord guides our students and faculty.
Faith Manning
Manning, Faith
Educational Aide

Educational Aide – Mrs. Faith Manning

My name is Faith Manning and I am the Educational Aide at St. Brendan School.  I have been in this position for 16 years.  You will find me all over the school – in the classroom, lunch/recess, and in the office.  St. Brendan School holds a special place in my heart since I am a graduate myself (Class of 1981), a parishioner, and my 2 children both graduated from SBS.  I feel so blessed to be able to share my faith with the students and staff every day and to grow in our faith journey together!  

Harrigan, Eileen
Debbie Ryba
Ryba, Debbie
Auxilliary Clerk
Leininger, Amanda
PTU Contact

St. Brendan School

4242 Brendan Lane
North Olmsted, Ohio 44070
P: 440-777-8433 | F: 440-779-7997
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