Father Rob Butz
Father Rob ButzPastor of St. Mary Parish
Fr. Rob was ordained to the priesthood in May of 2000. Before coming to Nativity of Mary, Father has served at various parishes throughout the Diocese of Madison including St. Raphael Cathedral, Madison; St. Thomas Aquinas, Madison; Corpus Christi, Boscobel; St. Olaf, De Forest; and St. Joseph, East Bristol. Father is also the diocesan chaplain of the Knights of Columbus. He enjoys reading, traveling, hiking, and biking.
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Our Valuable Administrative Members

Dr. Kim Ehrhardt
Dr. Kim EhrhardtPrincipal
Dr. Ehrhardt has extensive experience as an educational leader in both private and public-school systems. His first principal assignment was at St. Patrick’s School in Janesville followed by assignments in the Albany School District and the School District of Janesville at Franklin Middle School. He concluded his career in the district as Director of Instruction and Student Services until his retirement from the district in 2017. Dr. Ehrhardt also serves as a private educational consultant for the schools in the Arch Diocese of Milwaukee and the International Center for Leadership in Education. Also, Dr. Ehrhardt has taught graduate courses in educational leadership for Cardinal Stritch University and education courses for the University of Wisconsin. Dr. Ehrhardt looks forward to the opportunity to return to his “roots” by again serving in a leadership position in Catholic Schools with the assignment at St. Mary School. Dr. Ehrhardt is married to his wife Lisa (an educator for 35 years) and have two children, two grandchildren and a golden retriever named Molly. The Ehrhardt’s have resided in Janesville since 1979.
Dr. Ehrhardt has appreciated the support and warm welcome from Pastor Father Rob and members of the school interview team. He also looks forward to serving the students and parents of St. Mary School by contributing to the school’s rich legacy and tradition of excellence as we move into the 2019-2020 school year.

Mrs. Sue Vodak
Mrs. Sue VodakSecretary
I have been the school secretary at St. Mary School for over 35 years. My husband and I are members of St. Mary Parish and both of our daughters are graduates of the school. I have had the pleasure of working with great priests, principals, teachers, parents and students. In my spare time I enjoy spending time with my grandchildren.
Mrs. Sue Dickman
Mrs. Sue DickmanSecretary
Having lived in South Africa most of my life, I moved to Janesville with my husband, Alan, and daughter, Caitlyn, in 2005. Caitlyn and my son, Alistair, are both currently at St. Mary’s School. I have a Bachelor’s Degree in Psychology and Journalism, but have been a stay-at-home mom for the past ten years prior to working in the St. Mary’s School office. St. Mary’s has always been such a welcoming place for our family and I am excited to be a part of the wonderful staff here! In my spare time, I can be found at various kids’ sporting activities, arranging and making photo books, and cooking.

Our Valuable Teachers

Visit Miss Sara Fraser Classroom Website
Ms. Sara Fraser
Ms. Sara Fraser Pre-K 3 Teacher
Meet Miss Sara Fraser! Sara joins us as our new 3k teacher after completing field work at both St. John’s and St. Williams. She has a rich catholic tradition and has been teaching the gospel to kids for more than 10 years. We are thrilled to have her in 3k this year! Welcome Sara!
Visit Mrs. Hoff Classroom Website
Mrs. Kim Hoff
Mrs. Kim Hoff P4J Teacher & Kindergarten
I graduated from Carroll College in Waukesha in 2009 and have been teaching preschool since. My family moved to Janesville in 2016 when we fell in love with the family atmosphere St. Mary’s offered for our children. I was blessed to join the St. Mary’s teaching staff in 2017. My husband Bob and I have 3 children. Our oldest 2 attend St. Mary’s, in 1st and 4th grade. We enjoy camping and being outdoors.
Visit Mrs. Natalie Sandell Classroom Website
Ms. Natalie Sandell
Ms. Natalie SandellP4J Teacher
This is my first year here at St. Mary’s, and I’m so excited to be apart of this school and community. I graduated from UW-Whitewater with a bachelors degree in education and love to teach reading! I grew up in Beloit and still live there currently there my Fiance, Brent. I have two cats that are always up to mischief. I can’t wait to spend the next year learning and growing with my class!
Ms. Lexi Cervantes
Ms. Lexi CervantesPre-K 3 Teacher Aide
Mrs. Jenny Cervantes
Mrs. Jenny CervantesP4J Teacher Aide
Ms. Leigha Jones
Ms. Leigha JonesP4J Teacher Aide
Visit Mrs. Olson Classroom Website
Mrs. Christy Olson
Mrs. Christy OlsonKindergarten & 1st Grade Teacher
I have enjoyed teaching the learning basics to young learners for over 25 years. In addition to teaching at Saint Mary’s, I have also experienced Saint Mary’s as a parent, having had both of my children attend Saint Mary’s Pre-K through 8th grade. Outside of the classroom, I enjoy spending time with my husband, two children, and several fur babies. I keep busy reading, crafting, baking, and visiting with friends and family.
Visit Mrs. Statz Classroom Website
Mrs. Abbie Statz
Mrs. Abbie Statz2nd & 3rd Grade Teacher
After graduating from UW-Madison in 2005, I began teaching in 2006.  I joined the St. Mary School staff in 2011 and absolutely love teaching 3rd Grade!  While I enjoy every subject area, I have to admit that my favorites are Math and Science!
Visit Ms. Sierra Pursley Classroom Website
Ms. Sierra Pursley
Ms. Sierra Pursley4th Grade Teacher
We are excited to announce Ms. Sierra Pursley as our new 4th grade teacher! Sierra is a UWW grad and most recently taught at the ABC Learning Center. We are thrilled with her energy and eagerness to get the school year going!
Visit Mrs. Field Classroom Website
Mrs. Katherine Field
Mrs. Katherine Field5th Grade Teacher
This is my fourth year teaching at Saint Mary School and my tenth year total. I have taught second, third, fourth, fifth and sixth grade core classes. Also, pre-kindergarten through eighth grade technology. I am a graduate of Edgewood College and have been a resident of Janesville for 35 years.
I have two beautiful children whom I love and adore. One of which is traveling through the St. Mary’s halls.
I love teaching and being here at St. Mary’s. I love coming to work everyday and being with these incredible kids. They bring me joy and watching them develop and discover who they are as the year passes. Thank you for allowing me the privilege to teach your child this year. It is a team effort and I thank you in advance for the all the hard work and support you give; I could not do this job without you.
Visit Mrs. Janine Werner Classroom Website
Mrs. Janine Werner
Mrs. Janine WernerMiddle School Language Arts & Social Studies Teacher
Visit Mr. Bryce Ziegler Classroom Website
Mr. Michael Barrette
Mr. Michael BarretteMiddle School Math & Science Teacher
Visit Mrs. Sarah HodgeClassroom Website
Mrs. Sarah Hodge
Mrs. Sarah HodgeArt Teacher
I am excited to join St. Mary School as the art teacher for grades K-8. After Craig High School, I graduated from Carleton College with a Bachelor of Arts in English and the University of Michigan with a Master of Arts in English and Education. I have taught students in Detroit, Michigan, Brookfield, Wisconsin and most recently at UW-Rock County. In addition to St. Mary School, I teach two mornings a week at Goelzer’s Nursery School. I spend most of my free time studying and creating studio art with my children, 4-H members and friends; I have a strong background in art history, which I hope to incorporate into our class this year. I live on a farm southeast of Janesville with my husband and our two college-age daughters, Maddie and Liza and Jimmy a 6th grader at St. Mary School. Together we raise beef cattle, corn, soybeans, vegetables, and chickens. Thank you for the opportunity to teach your children; it is going to be a great year!
Visit Mrs. Gina Diece Classroom Website
Mrs. Gina Diece
Mrs. Gina DieceMusic Teacher
I am so excited to work with your child this year in music class. It’s going to be a year of fun and learning and I can’t wait to see what is in store for us! I thought you might like to know a little about me.

I am married to my wonderful husband, Kevin who also is a teacher in Fort Atkinson. We have one daughter, Gianna, who will be attending Kindergarten at St. Joseph’s Catholic School this school year. Although they take up most of my free time, some hobbies that I enjoy are reading, singing at church services, cooking, baking cakes, and sewing.

I have lived in Fort Atkinson since 2007. Most people know me as the choral director at Fort Atkinson Middle School where I had been employed since 2005. Before that I taught general music for one year at two elementary schools in Kenosha. I received my undergraduate degree in Music Education at UW-Whitewater and have started graduate work at The Vandercook College of Music in Chicago, Illinois.

Visit Mrs. Fisher Classroom Website
Mrs. Kay Fisher
Mrs. Kay FisherPhysical Education
I have been teaching at St. Mary’s since 2013. I am married and have 4 wonderful children. I received my B.S. degree from the Western Illinois University and my Master’s from National Louis University.
Visit Mr. Gre Classroom Website
Dr. Dennis Gre
Dr. Dennis Gre Spanish Teacher
Born in Santiago (Chile) but I have lived most of my life in Spain. I attended an American boarding school in Murcia (Spain) and then I received my Bachelor’s Degree in History, Master’s degree in Philosophy and PhD in Philosophy at the University of Murcia. I am excited to teach the students as much Spanish as possible, letting them know about the cultural aspects of the Spanish speaking countries.
Visit Ms. Weirich Classroom Website
Ms. Anne Weirich
Ms. Anne WeirichBand
Hello, my name is Anne Weirich. I am the band teacher at St. Mary’s School in Janesville, WI. I am starting my 10th year of teaching band at St. Mary’s this year. I have a degree in Music Education from the University of MN and have taught band for many years and in three different states: Minnesota, California and Wisconsin. I also play clarinet in the U Rock Concert Band and in the U Rock Chamber Orchestra. My 2nd degree is a BSN in Nursing, also from the University of Minnesota. Currently, I work in Public Health. I really enjoy working with people of all ages and adding richness to people’s lives through music.
Visit Ms. Shanae Woodward Classroom Website
Ms. Mary Kaye Derouin
Ms. Mary Kaye DerouinSchool Counselor
Ms. Lindsey Maslonka
Ms. Lindsey MaslonkaExtended Care Supervisor
I am so happy to be a part of St. Mary’s Family and Faith based school. I have my Associates Degree in Early Childhood Development. I attended the University of Rock County College and Blackhawk Technical College. I am the mother of three kids, who are ages 11, 15, and 21. I love working in the Pre-K room and Extended Care!
Mr. Dan Kessler
Mr. Dan KesslerMaintenance
I have lived in Janesville most my life. I am married to my wife Jenny, who attended St. Mary’s school. We have two daughters, Addison, and Kaitlyn, they both currently attend St. Mary’s School. I enjoy baseball, classic cars and helping coach my girls’ softball teams.
Mr. Jeremy Dostal
Mr. Jeremy DostalChef