amend the manner in which a school district determines the district's enrollment for the purpose of calculating state aid to general education.

SB 158 changes how South Dakota school districts calculate enrollment for state education funding. It specifies that a district's fall enrollment - used to determine aid - must include all K-12 students enrolled on the last Friday of September, plus students the district pays tuition for, minus students it receives tuition for (excluding nonresident students in state care and students in specific special education programs). The bill also defines annual enrollment as the higher of the fall or spring enrollment counts. This directly affects all public school districts receiving state aid for general education by altering their funding calculation base.