(2) Qualifications. Voluntary Prekindergarten (VPK) substitute instructors must be of good moral character and be screened. using the level 2 screening requirements in Section 435.04, F.S., before employment as a VPK substitute instructor. In addition, before employment as a VPK substitute instructor, a VPK substitute instructor must: (a) Meet the qualifications of a credentialed instructor; or. (b) Successfully complete one or more of the following: 1. In a summer VPK program class: