Be it enacted by the Senate and House of Representatives in General Court assembled, and by the authority of the same, as follows:

Notwithstanding the provision of any general or special law to the contrary, in order to implement its school building program, the city of Boston may, in addition to the prequalification requirements pursuant to section 44D of chapter 149 of the General Laws, establish and impose a requirement that only contractors and subcontractors with a workers' compensation experience modification factor, as promulgated by the workers' compensation rating bureau, of 125 per cent or less shall be eligible to submit a bid or offer, but any contractor or subcontractor with a modification factor of up to 135 per cent shall be eligible to submit a bid or offer, if that modification factor was caused by a single loss. The school building program of said city of Boston shall not be subject to the provisions of section 44F of said chapter 149. For the purpose of this act, the words "school building program" shall mean the design, construction and equipping of three new schools within the city of Boston, specifically, a middle school located at Brunswick Gardens, a middle school located at Mildred Avenue, and a school for grades kindergarten through eight located at Orchard Gardens, and the renovation or demolition of any structures at any of the existing sites at said schools.