Our Team
Administrative Team

Beth Steklac
Head of School
Tari St.Marie
Director of Operations
Annie Slothower
Director of Enrollment Mgmt
Sharon Muench
Director of Curriculum and Middle School Mathematics Teacher
Kristi Holmes Espineira
Director of Marketing
Tami Vinson
Director of DevelopmentPhilanthropy and mission have been in Tami’s vocabulary since she was a young volunteer. Today, Tami still gives her time actively to various nonprofit organizations including serving on the Steering Committee as the Chair of Mentoring for the Institute for Leaders in Development program at the University of Denver. A program for which Tami is also a graduate. Tami has also served as President of the Association of Fundraising Professionals (AFP) Colorado Chapter and National Philanthropy Day Chair.
Tami is thrilled to join the Mackintosh community where she can merge her professional experience and personal life. Tami comes from a family of educators and is inspired and fueled by Mackintosh Academy’s mission of keen minds, compassionate hearts and global action. Tami, her husband and their daughter, Zoe, are excited to have found this wonderful community.

Arleen Brogan-Smith
Business Manager
Sarah Schultz
Office ManagerFaculty

Denise Sironen
School Psychologist & SEL Coach
Stacey Anderson
Learning Specialist
Anne Wolf
Learning SpecialistDEI Coordinator

Ocean Sehlmeyer
PreKindergarten Lead Teacher/DirectorOcean lives in downtown Littleton with her husband Jesse and their two daughters, ages 18 and 15. As a family they care for several pets and travel, both locally and abroad, whenever possible.

Uta Letbetter
PreKindergarten Associate TeacherUta lives with her husband, their two energetic teenage boys and Rooney, their family Cockapoo. She has lived in Germany and Shanghai and has many volunteer hours in both the public elementary school and British International elementary school where her sons attended. Uta is passionate about creating and supporting a joyful and creative environment which instills a joy and passion for learning among our youngest students. She loves to spend time with her family and friends, and likes to hike, canoe, snowboard, read, travel and write.

Greg Ashworth Fanch
Kindergarten Co-Lead Teacher, ACE/Enrichment Director
Brittany Moylan
Kindergarten Co-Lead TeacherBrittany is excited to be joining the Mackintosh Academy community this Spring! She now lives in Castle Rock with her fiance and their dog, Bowie, and when she is not teaching, she can be found cooking a delicious meal at home, reading a book, or gravel bicycling along a scenic road.

Delaney Monroe
1st Grade Lead Teacher
Lara Pausback
2nd Grade Co-Lead Teacher
Brynn Jaouen-Starr
2nd Grade Co-Lead Teacher
Lula Guilbert
3rd/4th Grade Lead TeacherLula moved to Colorado with her family in 2002 and began working at Mackintosh in the spring of 2003. She became the lead teacher in (what was then called) the Primary 2 classroom before taking time away to nurture her own young family. She returned to Mackintosh in 2008 and has been a lead teacher, primarily in our 3rd-4th classes, since that time. Her educational passions include transdisciplinary connections, design thinking, multimodal communication, children’s literature and language development, and educational neuroscience. Outside of the classroom, she enjoys gardening, yoga, dance, playing games with her family, and relaxing with her chickens.

Lisa Lewis
3rd/4th Grade Lead Teacher
Stirling Rutty
3rd/4th Grade Associate Teacher
Nancy Muhich
5th/6th Grade Lead Teacher
Roger Chow
5th/6th Grade Lead Teacher
Samantha Walker
5th/6th Grade Associate Teacher
Joe Pausback
7th/8th Grade Math and Science Teacher
Darrah O'Flaherty
7th/8th Grade Language & Literature/Humanities TeacherIn her free time, Darrah is an avid traveler and lover of the outdoors who enjoys rugby, hiking with her rescue greyhound, camping, reading, and snowboarding. Darrah feels lucky to enjoy the creativity, inquisitiveness, empathy, and sheer joy that children bring to their studies and daily lives.

Josh Onderdonk
Physical Education TeacherWhen not teaching at Mack, Josh is doing something pertaining to sports or outdoor activities. He loves hiking in the mountains with his wife Sam, and takes any chance he can get to hit the links. Josh and Sam are also the proud parents of a 140 pound St. Barnard/Great Dane mix.

Christy Allen
Visual Arts Teacher
Kelly Kates
Performing Arts TeacherKelly was a counselor and teacher for ten years at Options Alternative High School, where she led the school drama, dance and choral programs. Kelly has worked as an actress and choreographer in Denver for the past twenty years, receiving recognition from the Denver Post and the Colorado Theatre Guild. She loves sharing her passion for the performing arts with children and youth. Fifteen years ago, she founded the children’s program at Town Hall Arts Center in Littleton. Before coming to Mackintosh, she taught musical theatre and tap dance for Centennial Academy of Fine Arts Education and the drama enrichment program for Wilder Elementary. Kelly and her husband live in Littleton with their two dancing daughters. She enjoys international travel with her family, and has volunteered for Habitat for Humanity in El Salvador and Canada.

Maria Cardona
World Languages Teacher - Spanish

Val Steklac
Design, Media & Tech Specialist/TeacherWhen not diving into news around the latest computer technology, Val enjoys searching for new and exciting tabletop games to learn and share.
Don't Be Shy. Get In Touch.
If you are interested in working together, send us an inquiry and we will get back to you as soon as we can!