revise provisions pertaining to requirements for students receiving alternative instruction.

HB 1158 revises South Dakota's requirements for students receiving alternative instruction (such as homeschooling). It requires these students to take state-mandated academic assessments if they are "partially enrolled" in a public school district (at least 50% of school hours), removing a previous exemption. The bill also adds specific deadlines: parents must file notification of alternative instruction within 30 days of starting it or changing districts, and annually by September 1st until the child graduates or fully enrolls in school. This directly affects homeschooling families and parents choosing alternative education within a public school district's boundaries.