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Masks are required in all indoor public spaces for those age 2+ regardless of vaccination status. More about the public health order.

Hours of operation have changed. NoBo Corner Library reopened Saturday, Oct 9. Reynolds Branch Library offers hold carryout appointments.


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.


  • 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.



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 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 7 days a week from 9-6 p.m.