The move, which will include tougher background checks and expanding training, was announced a day after a third employee at Needham Public Schools was arrested on child pornography charges.

Another Needham Public Schools has been arrested over allegations of having child sex abuse images, officials said Tuesday, prompting the Massachusetts district’s superintendent to discuss the possibility of changing district policy for increased oversight of its staff and contractors.

A Needham, Massachusetts, school employee has been charged with possession of child pornography and was placed on administrative leave, Needham Public Schools Superintendent David Gutekanst announced Tuesday.