Yes, unvaccinated kids can go to school in every state, but only if the family qualifies for and properly files an exemption. Every state requires certain vaccines for school entry, and every state allows at least one type of exemption from those requirements. What differs is which exemptions your state recognizes and how much paperwork it takes to get one approved.
The Three Types of Exemptions
State laws recognize up to three categories of exemption. Not every type is available in every state, and the broader ones have been narrowing.
Medical Exemption
Every state allows a medical exemption when a doctor determines that a specific vaccine would harm the child. Qualifying reasons commonly include a severe allergic reaction to a vaccine ingredient, a weakened immune system from a condition like leukemia or from treatments like chemotherapy, or a serious adverse reaction to a prior dose. 1CDC. State School Immunization Requirements and Vaccine Exemption Laws This is the only exemption type guaranteed to exist wherever you live.
Religious Exemption
Most states allow parents to opt out based on sincerely held religious beliefs. A handful of states have eliminated this option and now allow only medical exemptions. 2Centers for Disease Control and Prevention. State Vaccination Requirements Where a religious exemption is offered, it is a state policy choice, and courts have upheld the decision to repeal it in states that have gone that route.
Philosophical or Personal Belief Exemption
The broadest type covers objections based on personal, moral, or philosophical beliefs unrelated to religion. Roughly 15 to 18 states still permit some version of this exemption, and the number has been shrinking after measles outbreaks prompted several legislatures to remove it. 3PMC. Current Landscape of Nonmedical Vaccination Exemptions in the United States: Impact of Policy Changes Where it remains available, expect more paperwork than a decade ago.
How to File for an Exemption
Every exemption requires documentation submitted to the school before your child starts attending. The specifics depend on which type you’re seeking.
A medical exemption requires a signed statement from a licensed physician. The statement needs to identify which vaccines the child cannot safely receive, explain the medical reason, and indicate whether the exemption is temporary or permanent. Most states provide a standardized form through the health department. Some states have added review layers, requiring a second medical opinion or sign-off by a state health official to prevent fraudulent exemptions.
For religious and personal belief exemptions, the process usually involves a state-issued form or a written statement from the parent. Some states require the form to be notarized, which typically costs $5 to $15 per signature. A growing number of states, including Arizona, Arkansas, Colorado, Oregon, and Vermont, require parents to complete an online educational module about vaccine-preventable diseases before the exemption will be processed. 1CDC. State School Immunization Requirements and Vaccine Exemption Laws
Submit the paperwork to the school nurse or administrative office before the enrollment deadline, which is usually set at the start of the school year. The school reviews the documentation for compliance with state requirements and notifies you whether the exemption was approved. Approved exemptions go into the child’s official school health record. In many states, non-medical exemptions must be renewed every year or every two years rather than filed once and forgotten.
Provisional Enrollment and Grace Periods
If your child has started but not finished a required multi-dose vaccine series, most states allow provisional enrollment. The child attends school while completing the remaining doses on a catch-up schedule. This is not an exemption. It’s a temporary accommodation, and if the child falls off the catch-up schedule, the provisional status is revoked.
Most states also give families a grace period after enrollment, often around 30 days, to either complete the required vaccines or file exemption paperwork. Once that window closes without compliance, the school is required to exclude the child.
Exclusion During Disease Outbreaks
An approved exemption does not guarantee uninterrupted attendance. During an outbreak of a vaccine-preventable disease at the school, an unvaccinated child can be temporarily barred from campus even with a valid exemption on file. Most exemption forms require parents to acknowledge this in writing when signing.
Local or state health officials set the exclusion period based on the disease’s incubation time. For measles, excluded students typically cannot return until 21 days after the last known exposure at the school, and the clock resets if another case appears, so a student could be out for weeks. Shorter incubation periods mean shorter exclusions. The rule applies whether the exemption is medical, religious, or philosophical. Schools are generally not required to provide remote learning during these exclusions, so plan for how to keep the child’s education moving if it happens.
What Happens Without an Exemption
If your child is unvaccinated and you have not filed for an exemption, the school will not simply overlook it. Once the grace period ends, the school must exclude the child until the situation is resolved.
Compulsory attendance laws still apply, so a prolonged standoff can in theory lead to truancy proceedings. In practice, most families either obtain the vaccines, file an exemption, or arrange homeschooling before it reaches that stage. Schools are generally not obligated to provide remote instruction to a child excluded for failing to meet vaccination requirements. Students with disabilities who have an Individualized Education Program should continue receiving the services outlined in that plan regardless of vaccination status.
Private Schools, Daycare, and Homeschooling
Vaccination requirements are not limited to public schools. In most states, the same laws reach private and parochial schools, and many extend to licensed daycare and preschool programs. 1CDC. State School Immunization Requirements and Vaccine Exemption Laws Switching from public to private school is not a way around the requirement in most places.
Homeschooling is where the rules diverge most. Several states expressly include homeschooled children under their vaccination mandates; many do not. Enforcement is difficult when a child never enters a school building. If a homeschooled child later enrolls in a public or private school, or joins school-sponsored activities like sports, the standard requirements usually kick in. Check your state’s specific rules, because the answer is not uniform.
College Adds New Requirements
Vaccination rules don’t end with high school. At least 34 states and the District of Columbia require vaccination for students entering college or university, and the required list often expands beyond what K-12 required. 4National Conference of State Legislatures. State Vaccine Requirements for College Entry Common additions include the meningococcal vaccine, hepatitis B, and an updated tetanus-diphtheria-pertussis booster. More than 20 states specifically require the meningococcal vaccine for students in on-campus housing.
Exemptions are generally available at the college level too, but the process may differ from K-12, and individual colleges often impose their own policies on top of state requirements. A college’s own rules may be stricter than the state’s, so check both when a student is preparing to enroll.