The state auditor concluded that a western Massachusetts educational collaborative failed to ensure some teachers who worked for it were properly licensed.
The Collaborative for Educational Services, which is based in Northampton, provides services like professional development and curriculum assistance to 36 school districts in Hampshire and Franklin counties.
It also provides teachers in the state's juvenile lock-up facilities.
According to State Auditor Suzanne Bump, between 2017 and 2019, 18 of them did not have the proper licenses or waivers for what they were teaching.
Todd Gazda, who heads the nonprofit, said for organizations that work with the state goverment, audits are a part of doing business.