EDISON - A school superintendent who had to deal with a mass shooting of first-graders addressed New Jersey school officials today about security.

Newtown, Conn. superintendent Janet Robinson spoke today to the New Jersey Association of School Administrators. Dr. Robinson spoke about how her schools do have police on campus, but said other changes, such as strengthening glass and doors, need to be made to school buildings to delay attackers from gaining entry.

Twenty children and six educators were killed on Dec. 14 in her district's Sandy Hook school. The massacre jump-started debates about gun control and discussions about arming educators in schools.