McGeehan called for a state investigation in a letter Thursday to the state's education secretary after learning that the state's Public School Employees Retirement System is investigating Laboratory Charter and Ad Prima because state records show that Brown and three other staffers hold full-time jobs at both schools.
Brown receives more than $500,000 in salary from four charters and a private school.
Yesterday, Brown again defended the money she receives saying she and three other school employees divide their time between the schools. "I work hard," said Brown. "I really work hard and so do our teachers."
She added: "I do the job of four or five different people, and not a soul - not even my parents - would dispute that."
She was paid $331,701 as chief executive at the two charter schools for 2006-07 - $187,978 from Laboratory in Northern Liberties and $143,723 from Ad Prima, state records show. She opened a third city charter - Planet Abacus - in the fall which has not yet filed its annual report with the state or district.
She also worked five hours a week as a consultant to the Agora Cyber Charter School in Tredyffrin, which she founded in 2006, according to federal tax records.
Brown was also paid $177,000 in 2005-06 as executive director of Main Line Academy, a small, private special-education school in Bala Cynwyd, federal tax records show.
The state's 1997 charter school law does not say anything about salaries of CEOs or any other charter employee. As a result, neither the state nor the Philadelphia School Reform Commission have direct control over city charter salaries. That responsibility is left to the boards of individual charter schools.
Sandra Dungee Glenn, chairwoman of the reform commission, could not be reached for comment yesterday.
