Margaret Mason has quit the Christina School Board effective immediately.
Her term is not due to expire until 2021.
She was first elected to the board last year.
The Wilmington News Journal reports that the Delaware Department of Education said it is extending the filing deadline for the next school board election in May.
There is a 20 day-candidate filing period for election to the school board.
The paper had no word on why Mason suddenly decided to step down.