Covid-19 updates from the Executive Director

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Dear Students and Families,

I hope this note finds you and your family well.  As many of you know we will not be in our buildings for the remainder of the 2019-20 school year.  This brings a flood of emotion to many of us.  We miss seeing you and interacting with you in person.  We are sad about the loss of traditions like prom and the ability to celebrate the work of our seniors with a conventional graduation.  I am also filled with gratitude for all of our staff that has worked so hard to make online learning possible.  Teachers and our student service teams have worked hard at learning how to teach and deliver services remotely.  I am also thankful for all of you who have worked hard to learn how to learn in this new way.

I want to especially thank and recognize all of our seniors and their families who have worked so hard to make it to this point.  Most of us can only try to imagine what you are feeling during this special time.  I commit to you that we will do our very best to create a graduation ceremony that honors you and the tremendous work you have done.  In the coming weeks we should learn more about the health guidelines and what will be possible for a ceremony.  We ask for your ideas and suggestions on this front and we will let you know as soon as we have developed a date and a plan for that celebration.

You will receive information on registration for next year in the coming weeks and we anticipate being back in our buildings at that point.

If you have not heard from our staff multiple times please reach out to and I will connect you with someone immediately.

If you are still in need of technology or are having problems accessing your classes please reach out to if you attend Osage or if you attend GES.

If you are in need of food assistance during this time please reach out to if you attend Osage or if you attend GES.

I am deeply grateful for your commitment to education and creating solutions to the new challenges we face.  We look forward to seeing you in the near future.  We wish you and your family peace and wellness in these challenging times. 

Please let us know if you have any questions or suggestions.

Thank you,

Clark Callahan

Executive Director of Colorado High School Charter

"Formed in the spirit of dynamic growth, social justice and intellectual pursuits."



Colorado High School Charter is transforming the alternative education experience by igniting the potential within each of the diverse young people we serve.  CHSC ensures students’ personal and academic growth by creating tailored curricula, a supportive school environment, and community partnerships. We empower our students to succeed in life and positively contribute to their families and communities by offering them the freedom and resources to pursue a post-secondary path aligned with their individualized goals.






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Core Values


The Core Principles of CHSC guide and ground our work together as a community. We believe when these principles are practiced with fidelity and discipline they lead to profound growth and results for young people.  We encourage anyone who observes us not living up to these core principles to let us know so we can continue to improve our work.

  •  Relationships:We believe that learning happens when relationships are built on trust and respect. 

  • High Expectations: We believe that by expecting the most of ourselves and those around us and holding each other accountable leads to our greatest potential. 

  • Growth: We value contiuous improvement of ourselves, each other and our practices. We seek and apply feedback, reflect on our practice, maintain a can-do positive attutude, approach changes and challenges as opportunities to learn and celebrate each of our unique strengths in support of continuous improvement. 

  • Inclusivity: We believe that by embracing and learning from all people we become better, produce higher quality work and become more empowered. 

  • Wellness: We know that to perform and grow, we must feel safe and cared for, so we work continuously to  holistically meet the physical, emotional, social, spiritual, environmental, occupational and intellectual needs of everyone in our community. We believe that healthy people perform better. 

  • Third...Fourth...Fifth way: Our students embody this value and as partners with them, we work to emulate the practice of finding ladders, bulldozers and other solutions to the vast number of walls, roadblocks and problems we encounter. 

Explore Our Schools

Osage Campus and Home Office

1175 Osage St.

Denver, CO 80204

Tel: 303-892-8475

Fax: 303-362-6994

GES Campus:

3093 E. 42nd Ave.

Denver, CO 80216

Tel: 720-524-8664

Fax: 303-955-0027

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