Leslie Sem


Mrs. Sem has taught first grade at Mater Christi since 2004.  She earned her B.A. in Elementary Education from Salem State College in Salem, Massachusetts and her M.A. in Teaching Mathematics Grades K-12 from UVM.  Her two children have attended Mater Christi School.  Matthew was a graduate of the MCS class of 2010. Sarah was a graduate of the class of 2012. They both attended and graduated from  Rice Memorial High School, where Mrs. Sem volunteered as a Stunt Night Coach for many years.

Mrs. Sem’s past volunteer positions include being a co-coach of Math Counts at MCS for grades 6-8, and co-coaching her daughter’s MCS-OM teams to State titles for four consecutive years! She has also been seen in three faculty fundraiser plays.   You’ll also see her at MCS Green Up Days and serving food at the Back to School Carnival.

Mrs. Sem was on the Vermont Odyssey of the Mind Board of Directors for 4 years.  Her duties included being the State Awards Coordinator and Primary Problem Captain.  She retired from the board to begin volunteering for Make a Wish, Vermont and VCTM (Vermont Council for Teachers of Mathematics), Mrs. Sem is currently the co-chair with Jacie Kendrew (Middle School Math teacher) for the annual conference.

She has been the coordinator for the MCS- Odyssey of the Mind program for the past 10 years and also working part-time as an instructor at the Stern Center for Language and Learning. If you are interested in volunteering for Odyssey of the Mind, please let her know!  Both of her children volunteered as co-coaches for MCS teams through high school. She coached for 6 of the past 10 years.

Mrs. Sem is known for her love of flamingos and in her spare time likes to spend time with her family, read, travel, geocache, cook, and scrapbook

Undergraduate Degree

  • B.A. in Education from Salem State College; Salem, Mass.

Graduate Degree

  • MA in Elementary Education: Teaching Math K-12

Orton-Gillingham Classroom Educator

  • Since 2016

Best Mater Christi School Moment

The first day of the school year is one of my favorite moments!  Consequently, I’m very sad on the last day to let my students go!  It’s nice to know that I’ll have my students for two years now!


Spending time with  family & friends, scrapbooking, cross country skiing, reading, and travelling.

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