OKLAHOMA CITY (AP) — School teachers in Oklahoma with a gun license would be able to carry firearms into their classrooms with district approval under a bill approved in the state Senate.

The bill, approved on a 37-7 vote mostly along party lines, passed after it was amended to beef up the training requirements, requiring teachers to participate in active-shooter training with local law enforcement. The proposed new law is optional and would require a local school board approval first.

"We have a lot of kids right now who are vulnerable," said Sen. David Bullard, a Durant Republican whose rura...