(KCEN) -- Student safety has become a top priority in Dallas.
Police are checking each of the district's 150 schools to make sure kids are safe.
Officers have been doing walk-throughs all week and say they want as much of a presence as possible in order to reassure parents.
But they add they're not trying to turn schools into prisons.
Assistant Police Chief Bill Avera with Dallas ISD said, "We're not trying to make the school be a dungeon, ya know, locking people in. But what we do want to is make it more difficult for those who don't have a need to come into the school, to come in."
Every elementary school in Dallas has until Friday to submit their security concerns.
The district will then decide what to do about it and how to pay for it.