Manual Leadership

Principal Lynn Heintzman

Lynn Heintzman joins the Manual staff as the Acting Principal until the principal search process is complete. Lynn recently retired from education after 31 years. She was a secondary English teacher, principal and Chief Academic Officer in a neighboring school district before retiring from Brown Elementary in 2017.


Assistant Principal Douglas Clinkscales

Assistant Principal Douglas Clinkscales

Doug Clinkscales has worked at Manual since the school reopened in the 2007 – 2008 school year.   He taught social studies for 5 years and served as the school’s head football coach from 2009-2013.  Clinkscales has been the school’s athletic director since 2011.

Assistant Principal John Tricarico

John Tricarico is the Career Technical Education (CTE) Pathway Director and Assistant Principal at Manual.  He is a native of Denver and a graduate of the Denver Public Schools.  He has a B.A. in mathematics and an M.A. in curriculum and instruction, both from the University of Colorado at Denver.  John has been an educator in the Denver Public Schools for 30 years, 13 years as a mathematics teacher and 17 years as an assistant principal.  He is married and has three children, all of whom are in college.  John enjoys spending as much time as possible with his family, and being outdoors either road or mountain biking.  He is proud to be a part of the Manual staff. Please reach out to him at with any questions.

Assistant Principal Whitney Weathers

Whitney (Bradley) Weathers, the Assistant Principal of Early College, comes to Manual with ten years of experience as a teacher and teacher leader. She is a graduate of Nashville State Community College, Tennessee State University, and Vanderbilt University. She moved to Denver from Nashville, TN in 2016 after working in the Nashville Public School system. She is happy to be at Manual and loves the daily challenges being here brings. On a personal note, she is newly married and has a daughter who recently graduated from high school, an elementary aged son, and a newborn son. Please reach out to her at with questions. Go Bolts!

Chris DeRemer, Dean of Instruction

Chris DeRemer

Chris DeRemer is a the Dean of Instruction at Manual High School in Denver, Colorado. Chris received his Bachelor’s Degree in History and Secondary Education and Master’s Degree in Curriculum and Instruction from the University of Colorado at Boulder. He is currently a Doctoral Candidate in School Design and Innovation at the University of Northern Colorado. Chris’ work as a teacher and school leader have been recognized by The College Board and Denver Public Schools and has been highlighted in The Atlantic Magazine, Chalkbeat and the Denver Post. Before starting at Manual, Chris was a teacher in the Adams 12 School District and at Logos International School Phnom Penh, Cambodia. When he is not at school or in school he enjoys trail running, travelling and playing blocks with his children. He lives in Denver with his wife Leanne, his son Hayes and his daughter Ruth. To contact him, please email me at