About Our Teachers

Mrs. Barduson

My name is LeAnn Barduson and I am originally from Brandon, SD. I am an Augustana College graduate with my Bachelor of Arts degree in Math, Spanish, and Education. I have been a teacher in Worthington High School since 2013.

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Mrs. Berg

Growing up in Chicago, Illinois did not prepare me for the cold winters of Minnesota, but it did prepare me for the welcomed diversity of the Worthington School District. As one of the Math teachers at the ALC and the Trojan Learning Academy instructor, I am putting my B.S. degree in Mathematics from the Southern Illinois University – Edwardsville to good use.

Seeing students become successful in class is one of my greatest joys as a teacher. The challenges they give me encourage me to continue on the path of education.

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Dr. Bonnstetter

I started my career as a paraprofessional, and attended SMSU to earn my B.S. in Secondary Math Education. I taught gr. 7-12 math at Murray County Central for nine years, and earned my M.S. in Education: Math Emphasis at SMSU during that time. In 2005 I was hired at SMSU and worked there for 16 years in the Education department, where I primarily taught courses in secondary teaching methods and technology. I was also responsible for the accreditation and assessment of our licensure programs and served as the teacher licensure officer for many years. I earned my Ed.S. in Technology for Education and Training at the University of SD in 2005 and my Ed.D. in Curriculum and Instruction (also at USD) in 2007. The bulk of my research has been in dealing with math anxiety. I am also very interested in teaching math to English Learners and completed post-doctoral work in that area. I retired from SMSU in May 2021, and then decided to return to my first love of teaching high school math. I have 4 grown children and 12 grandchildren, and I love spending time with family, reading, gardening, sewing/crafting, and traveling.

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Ms. Hochholter

My name is Mackenzie Hochhalter. I am from the Sioux Falls, SD area and went to school in Brandon, SD. After high school, I went to South Dakota State University (SDSU) in Brookings, SD. I graduated from SDSU in May of 2021 with a B.S. degree in Mathematics with a Teaching Specialization. I started teaching here in Worthington in 2021. In my free time, I love baking treats for my friends and family.

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Mr. Koller

My name is John Koller and I am a Secondary Math Teacher. I teach Algebra I and Algebra II. I received my Bachelor of Arts in Secondary Math Education from Gustavus Adolphus College and my Masters Degree in Education from St. Mary’s University. Before coming to Worthington I taught for 10 years at SVRLB. I have been with ISD 518 since 2000. 

The thing I most enjoy about teaching is the challenge of delivering the best instruction possible and helping students achieve at their highest level. An interesting fact about me is that my first job was owning and running a cucumber farm and I hate pickles!

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Mr. LeTourneau

My name is Jeremiah LeTourneau and am one of the Math teachers at Worthington High School starting in 2017.

I received my BS from Winona State University in 2016. Growing up, I came from a small rural farm town in Hinckley, which is in Northern Minnesota.

My passion is to inspire students to have a desire to learn, want to grow so they are a better individual.

My personal interests besides for mathematics and teaching are backpacking, mountaineering, rock climbing, kayaking, running and playing guitar.

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Mr. Sedler

My name is Ryan Sedler and I am originally from Climax, MN. I am a Mayville State University (NorthDakota) graduate with a B.S. degree majoring in Math/Education along with a minor in Coaching.

My goals as an educator are to help students to be the best they can be and for students to enjoy math class all while improving a little more each day.

My personal interests include traveling ( Some places I have been to are Italy, Belgium, Germany, Switzerland, France, Holland, and the Philippines), going to concerts, and playing and watching most sports.

An interesting fact about me is that I was born in Germany.

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Mrs. Tripp

Since 2007, I have taught math at Worthington High School. I earned my degrees in Mathematics and Secondary Education from Augustana College and my master’s in Education with an emphasis in Mathematics from SMSU. I teach Accelerated Geometry, Algebra 3, AP Statistics, Pre-Calculus, and AP Calculus. 

What I enjoy most about teaching is that each day is a little different because of students and staff. They seem to constantly find new ways to amaze me.

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