• (307) 234-2873
  • staschool@sascasper.com
  • 1145 W. 20th Street, Casper, WY 82604

Faculty & Staff

Our Teachers

Monica Costalez

Nursery Lead
My name is Monica Costalez. I am currently a Preschool Assistant. I have been a part of an Early Childhood environment for over 20 years. I am a wife, mother, daughter, sister, aunt and friend. In my spare time, I enjoy quiet moments in prayer, listening to music, mini vacations, shopping and attending baby showers. What I enjoy most about working at St Anthony School are the children who I am able to pray with and share a bond of loving God with the school community. Watching God work!

Cynthia Howard

Toddler Teacher

Joy Newsome

Nursery Assistant

Lillian Greene

Nursery Assistant

Gabby Applegate

Preschool
I am so excited to be teaching preschool for another year at St. Anthony Tri-Parish Catholic School! I have two children Sawyer and Lyla who both attend school at St. Anthony's. I have three dogs Anna, Luna, and Mae and five ducks! I am very competitive, my family and I love sports; two of my favorite sports are basketball and volleyball. In my free time I enjoy being outdoors, watching my children participating in sports, and traveling together.

Valerie Williams

Preschool
This is my 4th year teaching preschool at St. Anthony Tri-Parish Catholic School! In my free time I love taking my dog Pepper for walks and exploring. I also love to camp and have game nights with my friends and family. I love teaching at St. Anthony's because each child is valued, and they are able to shine their light so bright!

Kassidy McClun

Preschool Assistant

Vacant

Preschool Assistant

Savannah Crippen

Kindergarten
My name is Savannah Crippen I was raised in Casper, WY. I graduated from The University of Wyoming (Go Pokes!!) I enjoy spending time with my family, going on walks, and working on fun projects around the house.

Lezlie Oliver

Kindergarten
My profession has been teaching for 30 years. I have three children and six grandchildren . I am from Miami, Florida. I moved to wyoming in 2022. I enjoy my family, antiques, reading and exercise . I am honored to be a part of the St Anthony’s school community. But the most important thing to me is my relationship with my Lord Jesus Christ.

Angela Ourth

First Grade
As I begin year three teaching first grade at St. Anthony Tri-Parish Catholic School, I embrace the opportunity to engage children to deepen their understanding of Christ and our faith through as many new experiences as possible. I am married to Bernie and together we have three grown daughters, and one adorable grandson. Our family loves the beach, traveling, hockey, card games and any other adventure we can find. I love to read, crochet, hike, swim, bike and be outdoors when possible!

Linda Lillie

First Grade
I am starting my 28th year in 1st grade at St. Antony’s. I have a total of 36 year of teaching experience. My highlight is spending time with my grand daughter.

Tiffany Catellier

Second Grade
I am currently a 2nd Grade teacher at St. Anthony Tri-Parish Catholic School. I’m blessed beyond measure to have the opportunity to incorporate my faith in Jesus every day as I teach. I have five nephews and three nieces and they are my world. My favorite place in the world (outside of Church) is my yurt on Casper, Mountain and it's even better when my dog is there with me. Go Broncos!

Doris Driskill

Second Grade Aide

Cheryl Gonzales

Third Grade

Wynter Williams

Third Grade

Amanda McCarthy

Fourth Grade
I am excited to start my eleventh year here at St. Anthony's Tri-Parish Catholic School. I love being able to share my faith with my students. I have a wonderful husband, two children and three dogs.

Jennifer Leman

Fourth Grade

Jacy Short

Fifth Grade

David Kahler

Fifth Grade Assistant Teacher

Melanie Harmon

Middle School History and Math
Over the past 25 years, I have taught children from preschool up through college, in the areas of Math, Science, Language, Psychology and now, History. I have an absolute love of learning and strive to instill that love in the students I teach. I feel blessed to have the opportunity to teach in a school that not only challenges students academically, but also develops a relationship with God. In my free time, I enjoy traveling with my family.

Ryan King

Middle School Math/Religion
My hope is that all people will come to know and love God and become who He created them to be. I am grateful for daily opportunities witness this transformation in the lives of our students. I began teaching math at St. Anthony’s in 2018. I earned degrees in engineering and education from CSU and BHSU. I am blessed to be married to an amazing lady and the father of two young children. Outside of school, I prioritize time with the Lord, making memories with my family, and recreating outdoors.

Mick Novotny

Middle School Science
Mr. Novotny is a dedicated educator and former fish biologist from Wyoming. A graduate of Natrona County High School, he earned a Bachelor of Science in Wildlife and Fisheries Biology Management and a Post-Baccalaureate in Secondary Science Education. In his sixth year at St. Anthony's Tri-Parish Catholic School, he teaches middle school science and emphasizes hands-on learning. An avid outdoorsman, exploring Wyoming with his family, inspiring students to become responsible stewards of nature.

William Wallace

Middle School English

Muffy Best

PE Teacher/Athletic Director
Teaching for 25 years, 22 at SAS. Married almost 20 years to Jason Best. Born and raised in Casper Wyoming. Have 3 children… Kayden 24, Jordan 17, Joslyn 12. I have two grandchildren, Ella and Kolby. I enjoy going to the movies, crafting and golfing. I spend most of my time traveling for my daughter’s sports.

Jessica Dickinson

Art Teacher
I'm absolutely thrilled to be teaching art at St. Anthony's Tri-Parish Catholic School. I love being creative and inspiring others, especially in a Christ-Centered classroom. I enjoy spending time with my family which consists of my husband Leroy, and my two daughters Miranda and Madison. I have over 15 years of teaching experience, and I love the unique opportunity to teach what I enjoy, art as well as the beautiful Catholic faith.

Janelle Kaiser

Middle School Religion/Library
I am currently the Librarian at St. Anthony Tri-Parish Catholic School. I love spending my free time with my three children and my husband, Neil. We enjoy reading, playing together, and exploring the outdoors. I am excited to be a part of this wonderful community and to share my talents with the students. I feel so fortunate to be answering God's call to service in my life in a way that involves one of my favorite hobbies. In the words of St. Augustine, "tolle lege!"

Jonathan Ramirez

Music Teacher

Osmeli Russian

Spanish Teacher
I am Osmeli Russian from Venezuela. I was hired as a Spanish teacher at SAS in 2004, but before, I was a clinical psychologist, specializing in criminology and learning processes. This school year is my 20th anniversary as an educator. "Mrs. Señora" is what some students call me, repeating my title in two languages! This has been an extraordinary opportunity to serve in this special calling, recognizing that the ultimate goal in serving God is finding good in every culture.

Jennifer Titus

Title I Tutor
This will be my 10th year as the Language Arts & Math Tutor! I LOVE being able to provide extra support to any student in our school who needs it! Seeing a child grow in ability and confidence is the best part of my job! SAS is a special place to our family! My oldest daughter is an SAS alum and we have a daughter in 8th grade, a son in 5th and a son in 1st. I most enjoy watching my kids’ activities, traveling, attending concerts and sporting events and running or hiking.

OUR OFFICE STAFF

Brandon halvorsen

Principal

Lisa Havens

Office Manager
I am the receptionist and currently in my 11th year here at St. Anthony Tri-Parish Catholic School. When I am not here, I enjoy spending time with my husband, Grant as well as our 3 boys, all of whom attended St. Anthony Tri-Parish Catholic School. I love how this school feels like a family.

Neil Kaiser

Business Manager
As the Business Manager, I will be performing a myriad of administrative task while also putting my handyman skills to good use looking after the Building & Grounds. I received a Bachelors degree from Wyoming Catholic College and a Master in Business from University of Wyoming. My hobbies are woodworking, flyfishing, hunting and, cooking. My wife (Janelle) and I happy to be bringing our family into this Catholic community, making friends, and doing our part to further His kingdom.

Christy LeClercq

Social/Emotional Health Coordinator

Christina Halvorsen

Nurse/Tutor

Vacant

Office Assistant/Social Media Manager

Mary Houck

Differentiation Coach

Kylor Bailey

Office Assistant

OUR SUPPORT STAFF & VOLUNTEERS

Michael Cormier

Building & Grounds Manager

Richard Shutts

Building & Grounds

Dan Galles

Building & Grounds

Elizabeth Halvorsen

Kitchen Manager

Ermenia Cardenas

Kitchen Assistant

Madi Dickinson

After Care Coordinator

Terry Cometto

Atrium Catechist

Kris Dona

Atrium Catechist

Karen Fehringer

Atrium Catechist

Holly Jackson

Atrium Catechist

Mary Kubicek

Debate Team Coach

Heath Hornecker

FFA Support

Foundation Staff

Courtney Ladenburger

Executive Director
Courtney Ladenburger has been a part of the St. Anthony Tri-Parish Catholic School family as parent, volunteer, and supporter for 15 years and since 2015 has worked for St. Anthony Tri-Parish Catholic School Foundation. Courtney enjoys connecting with community members, SAS alumni, and parishioners who support the mission of St. Anthony Tri-Parish Catholic School. As Our Lady of Fatima parishioners, Courtney and her husband Bret have greatly enjoyed being a part of Casper’s Tri-Parish community and strongly believe in the value of Catholic Education. Outside of work, Courtney enjoys camping, hiking, gardening and watching the performing events of daughters Megan and Sarah.

Amy Willcox

Foundation Assistant

Anne Derby

Stewardship & Events Coordinator
A Casper native, Anne graduated from NCHS before attending the University of Northern Colorado in Greeley. Anne has 3 children with her husband Ben attending St. Anthony Tri-Parish Catholic School and is so thankful for the opportunity to be at the school, calling her position here her "dream job!" As the Stewardship & Events Coordinator for the St. Anthony Tri-Parish Catholic School Foundation she plans and organizes the execution of our school's large fundraisers, including Partners In Education (PIE), The Archangel Amble Scramble and The Scholarship Classic Golf Tournament. Outside of school life, Anne and her family can be found camping and traveling as often as possible!

Cris Galles

Accountant