OKLAHOMA COUNTY, Okla. - Lock down procedure drills are now common practice in schools.
Just today, Deer Creek schools were placed on lock down for hours while police searched for a burglary suspect.
We can also confirm a threatening note was found in a Del City High School bathroom late Thursday afternoon.
These continual threats and lock downs can really disrupt the educational process.
It's really disruptive for everyone involved.
The problem is no threat can be taken lightly, and some say it could have long term effects in the learning environment.
"It was all a big mystery to us with what was happening," said Summer Ball, a 5th grader at Deer Creek schools.
It was a lock down at three Deer Creek Public schools today.
"They didn't tell us why we had to stay in the classroom," Ball said. "They just said nobody could go out of the classroom, so it just really scared me, because I didn't know why."
For the next three hours, Oklahoma County Sheriff's deputies searched for a burglary suspect.
"It was just like a regular school day, except there was a bad guy outside," Ball said.
Through the eyes of a child, it seems simple enough but not to parents.
"Immediately, as a parent, you freak out, and you don't know what to think, especially with the hit list and the Norman schools," said Misty Campbell, Summer's mom. "You're just concerned about your child's safety."
Some argue it goes beyond safety and also affects the learning process.
"They cannot just go from crisis back to normalcy," said Stewart Beasley, an expert child psychiatrist.
Which is what Summer was asked to do during class.
"We were just in our room, working on our work," Ball said.
"It interrupts the process of getting information to the brain, so this is affecting what they learning, when they're learning and how they're learning," Beasley said. "This can have a long term effect on them."
It's a process schools are still learning about.
Right now, they say they're number one priority is safety.
"We lock our doors, and our students are in class, and we do like to have school resume as normal, continue teaching and educating our children and doing it in the most safe way possible," said Lenis DeRieux, a spokesperson for Deer Creek schools.
Hoping their school isn't the next national headline.
"I don't think we can ever think not here, not in Deer Creek, DeRieux said. "I don't think any school district in our nation can think that way anymore, unfortunately."
"You cant live in fear about things," Campbell said. "You just pray for your child everyday."