Education in Colorado
Colorado educates roughly 880,000 public K–12 students across about 178 school districts, in a strong local-control tradition — the Colorado Department of Education (CDE) and State Board set the framework, while districts make many decisions, including specific graduation requirements.
Colorado stands out for its approach to choice and early learning. It has one of the nation's oldest and strongest public-school open-enrollment laws and a large charter sector — but no private-school vouchers or ESAs. It recently launched universal preschool, it's one of the states that mandates gifted education, and it rates schools with performance frameworks rather than letter grades. This guide walks through it all — for the student, the family, the school, and the educator — and points to the official source throughout.
Who must attend school
Colorado requires children ages 6 (by August 1) to 17 to attend school. Attendance can be met through a public school, charter school, private/parochial school, or a state-approved home-based education program. (For homeschoolers, a Notice of Intent must be in place at age 6, though formal instruction can begin at 7, and the NOI is no longer required once the student turns 16.)
- Start age6 (by August 1)
- End of compulsory age17
- Districts~178 local school districts
- Satisfying itPublic, charter, private, or home-based education
Universal Preschool (UPK)
Colorado launched a Universal Preschool Program (UPK) in 2023 that offers up to 15 hours per week of free, high-quality preschool to every child in the year before kindergarten (generally 4-year-olds), regardless of income. Additional hours may be available for children who are low-income or have a qualifying factor (such as being a dual-language learner, having an IEP, or being in foster care). Some 3-year-olds with qualifying factors are also eligible.
UPK is administered by the new Colorado Department of Early Childhood (CDEC), and families apply and are matched to providers through upk.colorado.gov. Colorado also offers Head Start and private early-care options. See our Kindergarten Readiness and Early Childhood toolkits, and confirm details with the CDEC.
Districts & charters
Colorado's roughly 178 school districts include large suburban systems and small rural ones. The largest include Denver Public Schools, Jeffco (Jefferson County), Douglas County, Cherry Creek, and Aurora. Colorado has a substantial charter-school sector, with charters authorized either by local districts or by the statewide Charter School Institute (CSI).
Colorado is especially known for robust public-school choice (see below). Find Colorado public and charter schools in our schools directory.
Private & independent schools in Colorado
Colorado has a solid private-school sector, concentrated in the Denver metro, Boulder, and Colorado Springs, spanning:
- Independent schoolsNonprofit, board-governed schools such as Colorado Academy, Kent Denver School, Graland Country Day, and St. Mary's Academy — plus the boarding Fountain Valley School near Colorado Springs
- Catholic & parochial schoolsArchdiocese of Denver schools (such as Regis Jesuit and Mullen)
- Other religious & Christian schoolsA range of Christian and faith-based options
- Specialty schoolsMontessori, Waldorf, and schools for specific learning needs
Colorado regulates private schools only lightly, and accreditation is voluntary — many independent schools are accredited through the Association of Colorado Independent Schools (ACIS) or Cognia. Because Colorado has no voucher or ESA, private schools are funded by tuition and their own financial aid. Families should ask about a school's accreditation, curriculum, and outcomes directly.
Strong open enrollment — but no vouchers
Colorado has one of the nation's strongest and oldest public-school-choice laws: statewide open enrollment (since 1990) lets families apply to attend any public school in any district that has available space, in or out of their home district — a genuinely expansive public-choice framework. Colorado also has a large charter sector and many magnet and alternative programs.
On the private side, however, Colorado has no statewide private-school voucher or ESA program — and the state's most prominent voucher effort (Douglas County's) was struck down by the Colorado Supreme Court. So Colorado's choice is overwhelmingly public. See our School Types toolkit for how these options compare.
Homeschooling in Colorado
Colorado's home-based education law is moderate in its requirements — clear but with a few recurring steps. The main route:
- File a Notice of Intent (NOI)Submit to a school district 14 days before beginning, and annually thereafter (until the student turns 16)
- Teach required subjectsIncluding reading, writing, speaking, math, history, civics, literature, science, and the U.S. Constitution (172 days, ~4 hours/day average)
- Test or evaluate periodicallyIn grades 3, 5, 7, 9, and 11, either a nationally standardized achievement test or an evaluation by a "qualified person"; results are submitted to the district
- Sports accessHomeschoolers may join extracurricular and interscholastic activities at the district where the NOI is filed
Families may also homeschool by enrolling in a private school or through an umbrella/independent school. Colorado homeschool parents set their own graduation requirements and issue their own diplomas, and homeschoolers can earn college credit through concurrent enrollment (aided by the College Opportunity Fund). See our Homeschooling toolkit, and confirm the NOI and testing rules with the CDE.
CMAS, PSAT & SAT
Colorado public schools use CMAS (Colorado Measures of Academic Success) — the statewide assessment in English language arts and mathematics in grades 3–8, plus science (grades 5, 8, and 11) and periodic social studies. At the high school level, Colorado administers the PSAT in grades 9 and 10 and the SAT in grade 11 as its college-readiness measures.
Home-based-education students test on their own schedule (grades 3, 5, 7, 9, 11) rather than through CMAS. See the CDE assessment pages for current details.
Colorado's Graduation Guidelines
True to its local-control model, Colorado leaves specific credit requirements to local districts — but every district's requirements must align with the state's Graduation Guidelines. A distinctive feature: students must demonstrate college and career readiness in English and math by meeting a minimum score on one option from a state "Menu of Options" — which includes the SAT/PSAT, ACT, AP or IB exams, concurrent enrollment, ASVAB, an industry certificate, or a capstone, among others.
- Local credit requirementsSet by each district
- Menu of OptionsDemonstrate readiness in English & math via one approved measure
- Flexible pathwaysTests, coursework, certificates, or capstone all qualify
- No single exit examStudents choose how to demonstrate readiness
Special education & gifted (a Colorado distinction)
Colorado serves students with disabilities under the federal IDEA, providing eligible students a free appropriate public education through an IEP in the least restrictive environment, with oversight from CDE's Exceptional Student Services and full procedural safeguards (mediation and due process).
Distinctively, Colorado mandates gifted education under the Exceptional Children's Educational Act (ECEA): districts (through their Administrative Units) must identify and serve gifted students, and each gifted student receives an Advanced Learning Plan (ALP) — a gifted counterpart to the IEP. See our Special Education and Gifted & Talented toolkits, and verify with the CDE.
Colorado's performance frameworks
Rather than assigning A–F letter grades, Colorado rates schools and districts through Performance Frameworks (the School Performance Framework, SPF, and District Performance Framework, DPF). These assign a plan type — from Performance (highest) down through Improvement, Priority Improvement, and Turnaround — based on measures such as academic achievement, academic growth, and postsecondary/workforce readiness.
Because growth and readiness weigh heavily, the rating reflects more than raw test scores. Explore Colorado school and district performance reports through the CDE (and the SchoolView data tools), and find schools in our directory (see our Choosing the Right School toolkit).
Immunizations & school entry
To enroll in a Colorado school, students must show proof of required immunizations per the schedule set by the Colorado Department of Public Health and Environment, or a valid exemption. Requirements follow the state schedule, with additional doses at certain grades.
Colorado allows medical, religious, and personal-belief exemptions — a broader set than many states, though recent law (SB 20-163) added a required exemption certificate obtained via an online education module or a signed form. Confirm current requirements with the Colorado Department of Public Health & Environment and your school district before enrolling.
The College Opportunity Fund & state aid
Colorado has a distinctive higher-ed funding mechanism: the College Opportunity Fund (COF) — a per-credit stipend that Colorado resident undergraduates apply for (once) to reduce their tuition at participating public and some private colleges. Colorado also provides need-based state financial aid (such as the Colorado Student Grant) distributed through institutions, plus other programs.
Students generally apply by filing the FAFSA (or CASFA, the Colorado application), and should apply for the COF stipend when enrolling. Use our Net Price, SAI Estimator, and Award Letter tools to plan costs, and see programs via the Colorado Department of Higher Education.
Colleges & universities in Colorado
Colorado's public higher education includes major systems and institutions — the University of Colorado system (Boulder, Denver, Colorado Springs, and the Anschutz Medical Campus), the Colorado State University system, the University of Northern Colorado, the Colorado School of Mines, and others, along with the Colorado Community College System and additional community and technical colleges offering associate degrees and transfer pathways.
Colorado also has private colleges and universities. Explore Colorado's colleges and universities in our directory.
Becoming a teacher in Colorado
Colorado licenses teachers through the CDE, and candidates must pass the required Praxis subject-area examinations after completing an approved preparation program. Colorado issues an Initial license, which advances to a Professional license with experience and induction, and offers alternative licensure pathways for career changers.
Colorado also provides reciprocity for many out-of-state educators. See our Teacher Certification, Praxis, and Job & Interview Tips for Educators toolkits, and the CDE Educator Licensing pages for specifics.
Where to get the authoritative details
Requirements change — this guide is a well-organized starting point, not the final authority. For the current, official word, go straight to the source:
Also essential: your local school district office (for enrollment, open enrollment, and options), the CDEC (for UPK), your school counselor, and the K12 Academics toolkits linked throughout this page.