Charter schools grow in Prince George's County - The Washington Post

Allen said growth of charter schools in Maryland has been slower than in other states because some operators view Maryland’s charter law as restrictive.

Nationwide, most charter teachers are not unionized, but they are in Maryland. Charter schools in the state have flexibility in scheduling, staffing, program offerings, resource allocations and grade configurations, according to state officials. Local school boards have the authority to authorize charters, as well as the power to revoke them or deny renewal based on academic achievement, attendance, enrollment and finances.