One New Jersey lawmaker is hoping to help prevent tragedies like the Virginia Tech massacre by requiring classroom door locks in every school and college in New Jersey. Sen. Barbara Buono said classroom doors that lock from the inside would help keep students and teachers safe if an armed intruder was inside a school or college building. Most classrooms doors can be locked from the outside, but not from inside, school officials said. ``With the escalation of guns and violence in our schools, we need to be proactive and rethink our strategies to keep our children safe and secure,’’ said Buono, a Middlesex County Democrat. ``No strategy is foolproof. This adds a layer of protection that security cameras and metal protectors do not provide.’’ An internal report on the April 16 Virginia Tech campus shootings that left 33 people dead recommended that the university install interior locks on classroom doors and removing ``drop bar’’ door handles that can be chained, among other security improvements. Buono’s proposal, which she said will be introduced when the Legislature reconvenes after the November election, does not address door handles.