As Newtown, Conn., gathered Monday for the first funerals of young shooting victims, local school officials took to the difficult task of assuring worried parents and assessing safety lessons they could take from Friday’s tragedy.

In email inboxes and on district websites, letters from superintendents and other statements from administrators laid out the safety procedures of schools.

Districts didn’t yet have definitive answers about whether the second-deadliest school shooting in U.S. history will cause drastic security changes.