(A) Students cannot attend school unless they are properly immunized and can provide satisfactory evidence of the immunization or unless they are exempted. The school administration shall exercise its power of pupil suspension or expulsion under section 167.161, RSMo, and possible summary suspension under section 167.171, RSMo, until the violation is removed. Transfer students in noncompliance shall not be permitted to enroll or attend school. Students enrolled during the previous school year shall be denied attendance for the current school year if not in compliance. Under section 160.2000, RSMo, children of military families shall be given thirty (30) days from the date of enrollment to obtain any required immunization, or initial vaccination for a required series of immunizations. A student determined to be homeless by school officials may be enrolled in school for no more than thirty (30) days prior to providing satisfactory evidence of immunization. If the homeless student's immunization record is not obtained within the thirty (30) days and the student is still eligible for services under the homeless education program, the student shall begin the immunization series and demonstrate that satisfactory progress has been accomplished within ninety (90) days. If the homeless student is exempted from receiving immunizations, then after the initial thirty- (30-) day enrollment, the student shall provide documentation in accordance with the exemption requirements included herein. For the purpose of this subsection, a homeless student shall be defined as a student who lacks a fixed, regular, and adequate nighttime residence; or who has a primary nighttime residence in a supervised publicly or privately operated shelter or in an institution providing temporary residence or in a public or private place not designated for or ordinarily used as a regular sleeping accommodation for human beings.

(C) It is unlawful for any student to attend school unless the student has been immunized according to this rule or unless a signed statement of medical or religious exemption is on file with the school administrator.

2. It is unlawful for any student to attend school unless he has been immunized as required under the rules and regulations of the department of health and senior services, and can provide satisfactory evidence of such immunization; except that if he produces satisfactory evidence of having begun the process of immunization, he may continue to attend school as long as the immunization process is being accomplished in the prescribed manner. It is unlawful for any parent or guardian to refuse or neglect to have his child immunized as required by this section, unless the child is properly exempted.

This document describes the vaccine requirements of school-age children and youth.