The chair of the Orange County School Board is resigning, less than a year after joining the board.

Dr. Debbie Piscitelli announced her resignation at a school board meeting this week. It’s effective immediately: board vice chair Brenda Stephens will take over as interim board chair, and the full board will select a new chair at its next meeting in December.

Piscitelli was first elected to the board in 2006 and served two terms. She decided not to run for re-election in 2014, but returned this March when board members appointed her to fill the seat left vacant by the death of Rosa Williams.

Piscitelli’s resignation leaves two vacancies on the seven-member board: Lawrence Sanders also resigned from his position less than a month ago. The district is already accepting applications to fill Sanders’ seat; the deadline to apply is December 2.