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How Old Do You Need to Be to Substitute Teach in Colorado?
You must be at least 18 years old to substitute teach in Colorado. There is no maximum age limit, and retired educators are highly valued as substitutes.
18 years old
Minimum Age
No limit
Maximum Age
Government-issued ID required
Age Verification
Paraprofessional or aide roles
Alternative for Younger Adults
Colorado Requirements Summary
Education Requirements
Colorado does not have a single statewide education requirement for substitute teachers. Requirements are set at the district level and vary significantly. Some districts require a bachelor's degree, while others accept candidates with a high school diploma or a minimum of 60 college credit hours. Applicants should check with the specific district for its education standards.
Background Check
All substitute teachers in Colorado must pass a fingerprint-based criminal background check, including both a Colorado Bureau of Investigation (CBI) and FBI check. This is a statewide requirement regardless of the district. The background check must be completed and cleared before the substitute can be placed in a classroom.
Age Requirements
Substitute teachers in Colorado must be at least 18 years of age. Individual school districts may set higher minimum age requirements at their discretion.
Application Process
Because Colorado does not issue a state-level substitute teaching license, applicants apply directly to individual school districts. Each district manages its own substitute teacher pool and application process. Many larger Colorado districts use online application portals or partner with substitute staffing agencies such as Kelly Education or Swing Education.
18 years old
Minimum Age
No limit
Maximum Age
Government-issued ID required
Age Verification
Paraprofessional or aide roles
Alternative for Younger Adults
Frequently Asked Questions
Related Resources
Colorado Requirements
Full requirements overview for Colorado
Colorado: Salary Guide
Colorado: Without a Degree
Colorado: Background Check
Colorado: Certification
Colorado: How to Apply
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