State law addresses vaccinations.
216-RICR-30-05-3 Immunization and Communicable Disease Testing in Preschool School Colleges or Universities
A. Each student, upon initial entry to any preschool or school in this state, shall furnish evidence to the administrative head of the preschool or school (pursuant to the requirements of section 3.4 of these rules and regulations) that the student has been immunized, as required in sections 3.2, 3.3, and 3.4 herein, unless the student is in an exempt category.
Immunization Information for Schools and Child Care Workers
This site lays out immunization requirements for students