Natalie Pramenko, Principal

Grade 9 (Class of 2027 Co-Administrator)

Administrative Assistant: Julie Dunsmore 303.347.6023


Natalie has been a public educator for 34 years. She graduated from the University of Nevada, Reno where she earned her bachelor’s degree in biology and a minor in chemistry. Natalie was a high school science teacher for 10 years (biology, chemistry, and anatomy/physiology) prior to entering the world of high school administration. She served as an assistant principal for 12 years (8 here at Arapahoe) before becoming the principal in 2012-2013. In addition to teaching and administration, Natalie has spent the last 34 years working with student athletes coaching the sport of cheerleading, where her Colorado teams earned 4 state championships, as well as 2 runner-up titles.

Outside of Arapahoe, Natalie enjoys spending it with her family. She and her husband of twenty-five years, Patrick, have two children, Mollie (20) and Ryan (16) who attend San Diego State and Arapahoe High School, respectively.  

While Natalie has a broad range of administrative experience, the majority of her time has been spent in curriculum and instruction, teacher performance evaluation, instructional budgeting and student discipline and attendance. She enjoys people, and places strong value on the many positive relationships she has developed with her faculty, staff, students and parents at Arapahoe High School. Natalie highly values the LPS community, and is extremely proud to be the principal of Arapahoe High School.

Brian Ceriani, Assistant Principal

Student Services
Grade 11 (Class of 2025)                                                                                                                

Administrative Assistant: Raina Sorensen 303.347.6049


Brian moved to Colorado from New Jersey in 1999. He and his wife were looking for an "adventure" after they graduated from Rowan University. Seventeen years and two kids later (as well as both entire families moving out), it is safe to say they are here to stay. Brian left a career in law enforcement to begin his career in education. He received his MS in Counseling and his MA in School Administration from the University of Phoenix. Brian has worked as a substitute teacher, counselor and middle school assistant principal. Brian loves the Colorado lifestyle but still misses the food and culture of New Jersey (as well as the Yankees and Jets).

Abby Kuhlmann, Assistant Principal

Activities Director
Grade 10 (Class of 2026)

Administrative Assistant: Alicia Peterson 303.347.6095


Abby enters her seventh year on the AHS administrative team after working for Arapahoe as a Language Arts teacher for seven years. A true Centennial native, she graduated from Arapahoe in 2005. She has a BA in English with teaching, and Spanish from Colorado Mesa University. She obtained her MS in Educational Administration from Fort Hays State University. Additionally, she has coached girls basketball for the Warriors for eight years. As the Arapahoe Activities Director, her core value in this role is to help students seek out their passions with like-minded peers in a way that inspires hope and future pursuits. When she's not at school, she spends her time with her friends, family,  husband, and two beautiful daughters, and hopes that this time is spent somewhere outside.

Lawrence Chavers, Assistant Principal

Athletic Director
Grade 9 (Class of 2027 Co-Administrator)

Administrative Assistant:  Janelle Weems 303.347.6021


Lawrence Chavers grew up here in Colorado and attended Hinkley High School in Aurora. He was a highly recruited athlete coming out of high school and received a full-ride scholarship to the University of Wyoming to play football. During his playing career at Wyoming, he played in three post-season bowl games. He taught science and math for thirteen years at Thunder Ridge Middle School in Cherry Creek before becoming an administrator. During this time, he coached football, boys and girls basketball, and boys and girls track for Eaglecrest High School. Prior to coming to Powell, Mr. Chavers spent seven years as an assistant principal/athletic director at Sierra Middle School, in Douglas County. When Mr. Chavers is away from school, he enjoys spending time with his wife Jen, and sons TJ and Jalen. He loves attending their sporting events and sometimes even gets to coach them. He also enjoys deejaying events in his spare time, and he really enjoys listening to music. Mr. Chavers’ goals for our Warriors are #1 be a good person, #2 be a good student, and #3 be good at whatever it is that makes you you - in that order, and with no exceptions.

Ryan Miwa, Assistant Principal

Curriculum and Instruction
Grade 12 (Class of 2024)

Administrative Assistant: Melissa Wern 303.347.6025


Ryan is starting his 16th year in Education and his 6th year at Arapahoe High School. He is a graduate of Littleton Public Schools and is excited to be a part of the district. Ryan graduated from the University of Northern Colorado with a Bachelor's Degree in Chemistry. He started his teaching career at Ponderosa High School in 2008 where he taught Chemistry and AP Chemistry. While teaching, Ryan earned his Masters in Natural Sciences at the University of Northern Colorado. Ryan also served as the Instructional Coach and Science Department Chair at Ponderosa High School. In 2015, Ryan continued his education career as a Dean of Students at Smoky Hill High School. While working at Smoky Hill, Ryan earned his Educational Specialist Degree in Administration, Policy and Leadership Studies, from the University of Colorado Denver. Ryan joined the Arapahoe Administration Team in 2018. When he's not at work, he loves to spend time with his wife, daughter, and 2 dogs. Ryan also enjoys woodworking and  projects around the house. 

All Administrators Share Responsibility For:

  • Staff Evaluations & Supervision
  • Event Supervision
  • Public Relations/Press Releases/Newsletter/Twitter
  • Lunch Supervision
  • School Safety & Security Support
  • Facility/Cleanliness & Maintenance
  • Visibility/Accessibility