The shooting at Sandy Hook Elementary School forced schools in other surrounding towns to lock down Friday.
Schools in Bethel were in lockdown for part of the day, according to officials there. Region 15 Schools were locked down as well, school officials said.
In Monroe, schools were in a modified lockdown, which meant students could move from classroom to classroom, but no one was allowed in or out of the schools.
Students in Watertown were in a similar situation. Schools there were placed in a lock-in situation, according to officials. Students were able to move freely within the school buildings, but no one was being let in or out.
Danbury mayor Mark Boughton said police increased security around city schools, but no schools have were placed into lockdown.