Connecticut lawmakers passed a measure in the final hours of the 2024 legislative session that would roll back a reform that Gov. Ned Lamont’s administration pushed for after the state’s school construction program became the subject of a federal criminal investigation. A single sentence change in a 254-page bond bill will, if signed by the governor, allow construction managers — the companies that oversee most state building projects — to also bid on the subcontracts for school construction. That type of contracting, which is frequently referred to as “self-performance,” was advocated for by Kosta Diamantis, the former director of the state’s school construction office who resigned in the wake of the federal grand jury investigation. The vast majority of school building projects in Connecticut are managed by a small group of construction companies. State lawmakers passed the contracting changes that DAS requested in 2022 as part of an annual budget bill.