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Career Online High School

Diploma dude

Career Online High School (COHS) is an accredited high school diploma and career certificate program offered free of charge by Boulder Public Library in partnership with the Boulder Library Foundation.

Boulder County residents who are 19 years old or older are eligible to apply.


Application and Enrollment Process

  • Applicants who successfully complete an online self-assessment and prerequisite course, followed by an in-person interview, will be considered for enrollment.
  • Scholarship awards will be determined within one week of the interview.

Program Information

Career Certificates

In addition to a high school diploma, students choose a major from one of the following high-demand career fields and complete coursework to earn a certificate in one of the following areas:



Questions?  Contact:

if the COHS program isn't a good fit, explore these other resources and services.


Services & Help

The Call Center hours are

  • Monday through Thursday: 9 a.m. to 7 p.m.
  • Friday through Saturday: 10 a.m. to 5 p.m.
  • Sunday: noon to 5 p.m.

Call us:  303-441-3100
Text us: 303-351-1955
Most questions can be asked and answered through our Ask a Librarian service which is staffed during library hours.