SECTION 1. Section 2 of chapter 70 of the General Laws, as appearing in the 2016 Official Edition, is hereby amended by striking out the definition of “Assumed in-school special education enrollment” and inserting in place there the following definition:-

“Assumed in-school special education enrollment”, 4 per cent of the total foundation enrollment in a district, not including vocational or preschool enrollment, plus 5 per cent of vocational enrollment.

SECTION 2. Said section 2 of said chapter 70, as so appearing, is hereby further amended by striking the definition of “foundation special education tuition” and inserting in place thereof the following definition:-

“Foundation special education tuition”, the amount allotted within a district’s foundation budget for special education tuition in any fiscal year. The value shall be the product of 3 times the statewide foundation budget per pupil amount and the assumed tuitioned-out special education enrollment.

SECTION 3. Chapter 70 of the General laws is hereby further amended by inserting after section 4 the following section:-

Section 4A. Notwithstanding any general or special law to the contrary, paragraphs 4 and 84, of section 2 of chapter 70 shall be fully implemented by fiscal year 2021; provided, that the rates for implementation shall be determined annually by the legislature based on cost estimates to be provided annually by the department; provided further, that if revenue projections for the following fiscal year significantly exceed the available revenues for the current fiscal year, the rates for assumed in-school special education enrollment may increase at higher rates to be determined by the legislature.

SECTION 4. This act shall take effect on December 31, 2019.