NEW HAVEN, Conn. (AP) — A judge is weighing whether to dismiss a negligence lawsuit filed by the parents of two children killed in the 2012 Newtown, Connecticut, school shooting massacre against the town and its school district.

The plaintiffs' attorney, Devin Janosov, argued Monday at court in New Haven that school officials failed to order a lockdown, which might have saved lives.

A town attorney, Charles DeLuca, says administrators were forced to make split-second decisions in a harrowing situation. He called it "insulting" to suggest that they were to blame for the deaths.

Janosov says the...