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Osage Campus

Laura Pritchard

Special Education Coordinator

Before joining CHSC, Mrs. Pritchard worked for many years in elementary and middle schools with a range of of students, including those with severe needs, mild/moderate needs and without disabilities but at risk for falling behind.  She has been married to her husband, Bobby, for almost 22 years and has three daughters.  In her free time, she loves to spend time with her family camping, hiking, biking, boating, stand up paddling and kayaking.  Ms. Pritchard grew up in Texas. She earned a BS in Kinesiology from St. Edward’s University in Austin. After a few years in the medical field, she obtained her teaching certification. She's never looked back and loves teaching!

Shalom Sanchez

Special Education Teacher

Shalom Sanchez is excited to be part of the CHSC team.  She grew up in New Mexico and is a proud Aunty of 25 nieces and nephews. She has taught in Kansas, New Mexico, California and now Colorado. While in California she started mentoring students in Los Angeles and training them to run marathons and has been addicted to running ever since.  She loves the theatre, hiking, snowboarding or really anything outdoors and has climbed the highest peak in the continental United States.

Marisa Santarella

Social Worker

Marisa grew up in Littleton, Colorado where she spent most of her time playing soccer and hiking with her dogs. She earned her Bachelors of Arts in Sociology and Anthropology from Lewis & Clark College, and her Masters of Social Work with a concentration in Children and Youth from the University of Denver. Marisa has worked in four school districts across the country including Seattle, Dallas, and Denver. She loves to laugh, hike, bike, and cook. Her passion is working with young people in schools and communities to help them develop skills that promote self-empowerment and healing. Marisa is thankful for all of the young people, professors, colleagues, friends, and family who have shared their knowledge and stories shaping her mind and understanding of the world.

Marius Finch

Student Engagement Counselor

303-892-8475, x1132

Marius Finch is a Denver native. He attended Manual High School and then the University of Colorado-Boulder where he majored in Psychology and minored in Business. He brings over 15 years of direct service experience working with the Youth Opportunity program at Denver Housing Authority. He also spent 10 years working as a Program Director with the Colorado I Have a Dream Foundation. He most recently served as a Counselor at New America School, working with youth to help them attain personal success, which has always been a passion of his. When he isn't working he enjoys spending time with his three children Sebastian, Vivian, and Marius Jr. (MJ).

Rigo Tostado

Concurrent Enrollment Counselor

Rigo comes to Colorado High School Charter after spending nearly 10 years as a Program Director for the “I Have a Dream” Foundation. He is excited by the opportunity to keep working with youth in Denver and supporting them as they discover their own paths towards successful careers.  Rigo is a graduate of the University of Redlands where he earned a degree in Spanish and in Race and Ethnic Studies. Originally from San Diego, Rigo grew up just north of Denver in Longmont and has been living in Denver since he graduated from college. Rigo enjoys traveling, trying new foods in new places and meeting new people. He is also a big sports fan, especially baseball and soccer. 

Sandy Vasquez

Office Manager

Miss Sandy was born in El Paso, Texas; Texas born Colorado raised! Her family moved to Denver when she was 8 years old because there were not enough good job opportunities for them in Texas. Miss Sandy graduated from Skyview High School in Thornton, CO.  Miss Sandy is fluent in Spanish so our Spanish speaking families and guests can count on an additional support in our office. She is a dedicated scholar support system and is always looking for ways to improve school culture both among staff and students and, of course, our Colorado High families! She is ecstatic to bring her enthusiasm to this team!

Liz Feldhusen


303-892-8472, x1106

Liz has worked at CHSC since 2011. She earned her Master’s Degree in School Counseling from Northeastern University and completed her license in Administrative Leadership and Policies Studies at CU Denver in 2017.


Liz loves helping to direct policy at school that empowers youth to express themselves in authentic ways and grow academically and personally.  


Liz got her undergraduate degree from Gettysburg College where she also played on the Women’s Soccer Team. In her free time, she enjoys practicing yoga, listening to live music, traveling and spending time with friends, family, and her dog, Lola.

Gabriel Neely

Assistant Principal

303-892-8475, x1108

Mr. Neely is fortunate to have had many dynamic teachers in his life and credits this as a main reason for working in education. He also loves to learn and hopes to empower his students to think critically about the world.


Mr. Neely has over ten years of teaching experience at both the collegiate and secondary level, and he joined CHSC in 2015. He has a BS in Geography and an MA in Education from the University of Wisconsin-La Crosse and originally hails from Wisconsin. 


Mr. Neely loves the American West and moved to Colorado in 2014.  He travels as much as he can and enjoys the mountains for skiing, rock climbing, and backpacking. He also enjoys sports, film, and literature, and dabbles creatively as a guitar player, screenwriter, and cook.

Eden Gebru

Post Secondary Advocate

Eden is a recent graduate of The University of Denver with degrees in International Studies, Political Science and Psychology. She was born and raised in Ethiopia and moved to Colorado when she was 9 years old. In her undergraduate time she has had experience working in different areas such as education, policy and research. In the future, she hopes to go to grad school and pursue a master’s degree in Educating Policy.  She loves how beautiful the mountains in Colorado are  and how vibrant the cities are. In her free time she enjoys reading, traveling and going on picnics. She is excited to join the team and help students achieve their post- secondary goals!

Leah Ortega

Science Teacher

Ms. O is from the small border-town of Douglas, Arizona. She earned her BS in Biochemistry and Molecular & Cellular Biology from the University of Arizona in Tucson, AZ. During her time as an undergrad, Ms. O studied abroad, participated in research, and was involved in multiple organizations. Post-graduation, she became a Teach for America Corps Member and is honored to be apart of the CHSC family! One day, she hopes to continue her education to become a physician. In her free time, Ms. O loves to volunteer, read, and explore new cities.

Jay Fuhrman

Language Arts Teacher

Jay has been an English teacher at Colorado High School Charter since 2018. He is originally from central Connecticut and holds a BA from St. Lawrence University and an MA from Middlebury College. Before joining CHSC, Jay taught English and coached a variety of sports at schools in Connecticut. He enjoys adventuring throughout Colorado outdoors with his wife and two dogs.

Gracie Grant

Language Arts Teacher

Originally from Montclair, New Jersey, Ms. Grant is a passionate educator with a thirst for knowledge and relationship-building. Before becoming an educator, Ms. Grant gained both her undergraduate and graduate degrees from The University of North Carolina at Chapel Hill (GO HEELS!). As an undergrad, Ms. Grant graduated with her degree in English with honors and Linguistics. Then, as a graduate student, Ms. Grant earned a Master of Arts in Teaching. As an educator, Ms. Grant seeks to share her passion for reading and critical conversation. But, when she is not teaching, you can find Ms. Grant hiking, reading, watching reality tv, or doing anything in the sun!

Amairani Zuniga-Torres

Student Advocate


Amairani is a Denver native. She was the first one in her family to finish her education. Amairani earned her Bachelors Degree in Criminal Justice and a minor in Human Services from Metropolitan State University. Amairani understands the importance, the adversities, and the opportunities that a higher education brings, first hand. This is why she has a passion to help students succeed. She believes that through dedication and persistence, youth are closer in reaching their dreams. During her free time, Amairani enjoys spending time with family and loves to craft.

Julie Kogan

Social Studies Teacher

 Julie is a three-time graduate of the University of Oklahoma and holds bachelor’s degree in history, a master’s degree in Liberal Studies, and a Ph.D. in Educational Studies with graduate certification in Women’s and Gender Studies.  She has taught at both the secondary and post-secondary levels and to traditional and non-traditional learners, including students serving in the U.S. military.  Julie’s professional passion is teaching to advance social equity, and she encourages her students to be civically engaged actors, creative thinkers and problem-solvers, and to care for other people and the world we share with nonhuman others.  In addition to teaching, Julie’s academic research explores social justice issues in education, autobiographical narratives, public health, and ecofeminist philosophy. Her hobbies and interests include reading science fiction and science fiction movies, vegan cooking, cross-country road trips, hiking, rock hunting, and stargazing.  You may also catch her singing along to her favorite Tom Petty songs.

Courtney Capper

Science Teacher

Courtney is from Jim Thorpe, Pennsylvania. She earned her BS in Biology from Lock Haven University where she competed in cross country and track and field. She continued her science career with a research position at the University of Colorado. After discovering a love for teaching others, she became a Teach for America Corps Member and is excited to be a part of the CHSC community! During her free time, she loves to hike mountains, trail run, and play with her dog.

Samantha Miller

Language Arts Teacher

Sam is originally from Killington, Vermont, and moved to Colorado when she was four. She cares deeply about cultivating meaningful relationships with students, where students feel supported to succeed and to use their voice to create positive change in the world around them. Sam believes that through engaging with culturally diverse literature, students have the ability to learn about their own identity as writers and strengthen their voice as members of the community. Completing her BA in English Literature and Secondary Education from the University of Colorado, Boulder, Sam went on to complete her MA in English Literature from Arizona State University. She has traveled to Spain, Portugal, Israel, Croatia, and Slovenia. Her favorite experience so far is riding a camel through the desert. In her free time, Sam likes to cook, read, paint, and spend time outside with her cat, Fabio.

Manuel Sanchez

Math Teacher

Manuel “Manny” Sanchez has worked at CHSC since 2020. He has been in education for over 22 years, 15 years in teaching Intro to Drafting, Multimedia (Adobe Suite, 3D Printing) and 7 years teaching Mathematics. He enjoys unhinging student’s minds, changing their perspective on education while expanding their horizon, and igniting their intellect. Manny is a graduate from Azusa Pacific University. He has a B.A. in Human Development and a M.A. in Educational Technology. He is from Southern California and enjoys traveling, spending time with family, making noise on his drum kit, and playing golf with his boys.

Alexander Garst

Social Studies Teacher

Mr. Garst hails from Pennsylvania where he earned a BA in History from St. Joseph’s University and a Social Studies teaching certification from Widener University.  He taught Honors American Government and African Studies before relocating to Colorado in 2019.  Mr. Garst has a genuine commitment to student development and the learning experience and works to integrate inclusive teaching approaches.

Clark Callahan

Executive Director of CHSC


Clark has a deep passion to help all young people realize the value, freedom, and responsibility that comes with education.  Clark received his B.S. in Communications and Economics from the University of Northern Colorado, an MBA from Fairfield University and an Ed. M in Urban Educational Administration from Columbia. Bringing 15+ years of experience working in education. When Clark is not at school, you will find him enjoying a medium rare cheese burger with sweet potato fries and a soft and chewy chocolate chip cookie with a little vanilla ice cream on top. A dedicated family man, Clark values every moment he gets to spend with his wife and three children. Clark also enjoys running, skiing, hiking, knitting, and painting.

Jennifer Lilly

Director of Finance and Human Resources

Director of Finance and HR – Jennifer joined CHSC in 2020.  She has an accounting degree from University of New Mexico and an MBA from Colorado State University.  She is a CPA.  She spent the first part of her career doing financial analysis and the second part doing taxes.  Having had more fun than anyone has a right to have doing taxes, she decided another career change was in order.  Working in the educational environment has been a breath of fresh air.  While she doesn’t directly work with students, she does strive to keep the wheels on the bus behind the scenes!  When she’s not at work, you’ll find her on her bike, remodeling her house, or taking things out of her puppy’s mouth.  She loves to travel and spend time with her kids.  

Graziella Pilato

Math Teacher

Graziella Pilato is joining the CHSC team from Pennsylvania; where she grew up and obtained her B.S in Plant Science from The Pennsylvania State University. After graduating, she joined Teach for America and is honored to begin her teaching journey with the wonderful people at CHSC. During Graziella's time as an undergraduate, she was a Millennium Scholar and president of the program’s student council. The Millennium Scholars Program is an academic scholarship program focused on diversifying professional STEM fields. Graziella has also been involved in various community impact programs, such as researching and working with lo al farmers to establish cropping systems to improve biodiversity and the variety of produce on farms near the Vaca Forest Reserve in Belize, CA. Graziella’s passion for STEM education and increasing diversity within these fields drew her to teaching and working with young people.

Colorado High School Charter

Front Office Staff

Meet the Osage Staff

If you would like to contact any of the teachers or staff, please click the email button below their description.