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Ms. Calhoun
I attended National-Louis University and graduated in 1997 with a B.A. in Elementary Education. I later attended North Park University and received an M.A. in Teacher Leadership in 2002. I have been teaching in District 15 for over twenty years. I wouldn't want to do anything else!
I am also the mom of two adventurous boys. I enjoy watching them play football and wrestle on their school teams. I like to read and garden in my spare time also. Traveling is one of my favorite things to do!

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Miss Forbes

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Mrs. Kessler
This is my 21st year teaching 5th grade in District 15. I taught my first year at Landmark, then moved to Duker when it opened as a 4/5 building. I've been here ever since! I have a Bachelor's degree in Elementary Education from Illinois State University (Go Redbirds!), and a Master's degree in Educational Leadership from Aurora University. For as long as I can remember, I've always loved working with kids.

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Mrs. Krofel
I have been teaching at Duker since it opened in 2001. Prior to that, I taught at Landmark the last year it was just a 5th grade building. My favorite grade (and teacher) was 5th grade growing up, and I find myself one of the lucky ones to have the opportunity to teach that same grade. I received a Bachelor’s Degree in Sociology/Gerontology in 1998. Two weeks after graduating I went back to school to receive a Masters Degree in Education. I graduated from Roosevelt University in 2000 and began teaching that fall. I should have followed my love for kids from the beginning and went into teaching after graduating high school. Oh well, I am doing what I love now!
My family and I live in Wauconda. I have 2 kids...my son is a junior this year and an avid baseball player. He is primarily a catcher on his HS and travel teams, but also plays any of the other 8 positions. My daughter is a 5th grader who keeps me on my toes. In my free time I enjoy spending time with my kids, baking, reading, and taking long walks.

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Mrs. Makowski

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Mrs. J. Nellessen
This is my seventeenth year at Duker. I am truly blessed to be able to teach in the same district that my children, Jessica and Victor, attended. I was born and raised in Australia and was a teacher there in the early 1980s. I met my husband while he was stationed in the small town, Woomera, I was teaching in. I have been living in the US since 1987 and became a US citizen in 2012. In my free time I love to read, sew, scrapbook, and spend time with my family, especially my granddaughter Zoie. I love teaching American history, especially the Revolutionary War. I look forward to every day and the adventure each new class gives.

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Mrs. Parcels

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Mrs. Rodenkirch
Czesz, if you're not Polish, that means hi! I am Sabina Rodenkirch, and I love being surrounded by kids each day as my job. I grew up attending this school as a 5th-8th grader when it was formerly called McHenry Junior High. Now, I am lucky enough to continue to make wonderful new memories as a 4th/5th-grade looping teacher. I received my Bachelor's Degree from Northern Illinois University and then went on to earn my Master's Degree in Teaching from Webster University. I am blessed with love from my husband, Brian, and our son Caleb. On the weekends you can find me on the soccer field cheering on my son, or daydreaming of being on the beach somewhere!

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Mrs. Sullivan
The 2021-2022 school year marks my 22nd year of teaching, however this is my first year at Duker and I couldn't be happier. I am a 5th grade special education teacher working with 12 students in the Instruct program. I recently moved to McHenry with my husband, two children and two dogs. We have lived in the southern suburbs of Minneapolis, Minnesota as well as Green Bay, Wisconsin for the last 20+ years. In my spare time I love reading, boating, crafting, and baking, but most of all I love spending time with my family and friends! I look forward to a fun-filled year of learning here at Duker!