(a) For the 1991-1992 school year, the dollars available to school districts for operating and administering classes for exceptional children shall be guaranteed at eight thousand five hundred five dollars ($8,505) per average daily membership for special education programs and services offered by school districts during the 1990-1991 school year and ten thousand two hundred ninety dollars ($10,290) per average daily membership for special education programs and services offered by the intermediate unit during the 1990-1991 school year.

(b) The dollars available to school districts for operating and administering classes for exceptional children shall be the sum of the following: total average daily membership for students receiving special education multiplied by the tuition charge pursuant to section 2561,¹ plus the amount calculated pursuant to sections 2509(f) and 2509.5(b)² and three times the district's payment to the Commonwealth for noninstitutionalized children's programs pursuant to section 2509.1(f).³

(c) If the actual dollars available to a school district, as calculated pursuant to subsection (b), are less than the total guaranteed dollars available to a school district pursuant to subsection (a), then the Commonwealth shall pay to such school district funds equal to the amount of the difference between the total guaranteed dollars available pursuant to subsection (a) and the actual dollars available pursuant to subsection (b).