Registration for Voluntary Prekindergarten (VPK) is now open for summer programs in Lee, Collier, Hendry and Glades Counties. The free educational program is available to 4-year-olds that reside in Florida, regardless of family income. Voluntary Prekindergarten gives children a jump-start by preparing them for school and enhancing their pre-reading, pre-math, language, and social skills. VPK.