Three high-profile Boston lawyers say they plan a court challenge to the state's cap on charter schools, which they say denies some students the right to a quality education.

Paul Ware, Michael Keating and William Lee announced their intention Sunday, and also spoke in interviews with The Boston Globe ( ).

Gov. Charlie Baker's spokesman said he wouldn't comment on pending litigation, but noted Baker has consistently supported raising the cap.

The publicly funded schools operate independently of local districts and are given more flexibility on curriculum, schedules and staffing. Critics say they often aren't more effective than traditional public schools, from which they divert funding.

The Massachusetts Teachers Association said Sunday charter schools don't serve all students equally and a lawsuit could further threaten public education.

Massachusetts has 80 charter schools with 30,000 students overall.