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Introducing Saint Ambrose Faculty & Staff

Saint Ambrose is committed to providing a certified and dedicated staff to nurture and challenge each and very St. Ambrose student. All of our teachers carry a degree related to their educational specialty, this includes degrees in art and music as well as specialized Master’s degrees.  They regularly participate in professional development courses and training to keep the curriculum current and interesting for the students.  The faculty nurture and challenge our students to achieve goals and play and active role in their education, family and community.  St. Ambrose faculty and staff play an important role in the growth, development and faith formation of your child. We invite you to get to know the faces your children see every day.

Father Jack Siefert, Pastor

The 2022-2023 school year will be Mrs. Grellner's 29th year in Catholic Education for the Archdiocese of St. Louis.  Mrs. Grellner has been a Learning Consultant for 12 years at St. Ambrose School.  She has a BS in elementary and special education and a MA in elementary education with her reading specialist certification.  She is married to Corey and has two sons, Zachary (19), Colin (16), and a black lab mix named Angel.  In addition to spending time with her boys,  Mrs. Grellner loves to go for long walks and hikes.


Michele Grellner, Principal

  Name Title
Kim Boatman Boatman, Kim School Finance Manager
Beth Cunningham Cunningham, Beth Kindergarten Teacher
Anne Daub Daub, Anne Pre-K 4 Teacher
Catherine DiBello DiBello, Catherine Teacher
Emily Elmore Elmore, Emily 4th Grade Teacher
Allison Entrikin Entrikin, Allison 1st Grade Teacher
Allison Griffero Griffero, Allison Pre-K 3 Teacher
Debbie Hilderbrand Hilderbrand, Debbie 8th Grade Teacher
Tina Hogan Hogan, Tina Marketing
Lisa Horner Horner, Lisa Assistant Principal, Learning Consultant
Tracey Lammert Lammert, Tracey 7th Grade Teacher
Katie Mannebach Mannebach, Katie Counselor
Bernadette Mense Mense, Bernadette After Care Program
Ann Miklovic Miklovic, Ann Art Teacher
Tina Offner Offner, Tina Italian Teacher
Maria Polizzi Polizzi, Maria 1st Grade Teacher
Jennifer Rath Rath, Jennifer Preschool Assistant
Jennifer Ruggeri Ruggeri, Jennifer 2nd Grade Teacher
Kathleen Seaton Seaton, Kathleen Pre-K 4 Teacher
Deborah Temperato Temperato, Deborah 5th Grade Teacher
Beth Wagner Wagner, Beth Music Teacher