Tel: (608) 496-1059


345 North Court Street

Platteville, WI 53818

Fr. John Blewett, Principal

Fr. John was born on January 17, 1981 in Fort Worth, Texas, the son of John and Susan.  He attended Shoreless Lake School in New Jersey with the Society of Jesus Christ the Priest and graduated from Seton High School. He received a degree in physics from the University of Murcia in Spain and a degree in Theology from the University of Navarre and taught for two years at Shoreless Lake School in Spain. 


He was ordained to the priesthood on July 31, 2009 at the Bishop O'Connor Center in Madison and helped at parishes in the Sauk City area until he became pastor at St. Norbert in Roxbury in 2010.  Later he became pastor at Divine Mercy Parish, Sauk City, WI where he played an integral role in establishing the school there, acting as Principal and teaching religion.

Haley Holmes, 3K/4K Teacher

Haley grew up in Lena, Illinois. Her mother ran a home daycare, and Haley helped out with the duties for as far back as she can remember.


She graduated from UW Platteville in 2016 with a major in Elementary Education and a minor in Early Childhood Studies. She comes to us from SS. Andrew - Thomas Catholic School in Potosi, where she  completed and loved her first official year of teaching.

She tries to weave faith into every subject – "things like teaching children to be kind, putting others first, and helping each other.  I help them to know who God is in terms they can understand and teach them to be an image of God every day."

Diane Drefcinski, Physical Education Teacher 

Diane and her family moved to Platteville in 1997 when her husband began teaching Philosophy at UWP. They have 6 children, 3 girls and 3 boys ages 25-13, and one grandchild.

Diane is licensed to teach K-8th grades and taught 6 years full-time in Catholic schools before having children. She has been a substitute in classrooms and Phy Ed programs for 6 years in parochial and public schools.

In addition to currently teaching phy ed to the 3 and 4 year olds at St. Mary (25 min, 5 days a week), she is in her 4th year as the Resource teacher at Holy Ghost-Immaculate Conception school in Kieler during the afternoons. She is also a cross country and track coach at Platteville Middle School.

There are no standards at this time for pre-kindergarten physical education. Thus Diane has developed a program based on the standards for kindergarten. Classes include aerobic development, muscle and coordination challenges, and fun activities.

Diane states, "It is a pleasure to work in St. Mary School". We are so blessed to have Diane who has committed her life to faith, family, and education.

Jenna Vystrcil, Secretary 

Jenna grew up in Griffin, Georgia. Her parents were both teachers in the public schools for 35 years. She earned her teacher's certification and a Bachelor's in Music Education from Shorter University, Rome, GA, and subsequently worked in client communications for an Atlanta investment firm. 

In addition to administrative duties, Jenna teaches the children sign language, incorporating music and literature. American Sign Language includes where to place one's hands around the body, the movement and shaping of the fingers, grammatical structure, and facial expression.

When she is not working outside the home, she enjoys motherhood, wrangling seven wonderful children.