NEW BRITAIN, Conn. (AP) A Connecticut panel reviewing school security standards following the Newtown massacre has been urged to keep their solutions simple and focus on adding classroom door locks and communication devices.

The School Safety Infrastructure Council held its fourth meeting Thursday in New Britain. It was the first session to gather input from people who spend much of their time inside schools.

Newtown Middle School teacher and union leader Ron Chivinski suggested that classroom doors be retrofitted with locks that can be used from the inside and outside, allowing teachers to lock down classroom.

Connecticut Education Association Vice President Jeff Leake says his members think there should be a way to inform teachers of intruders without alarming students.

Council members must submit recommendations by Jan. 1 to state agencies and legislative committees.