The app was first rolled out through a pilot program in which the Chula Vista Police Department, Chula Vista Elementary School District and Sweetwater Union High School District took part, according to the DA's office.
The program is now being implemented in El Cajon by the Cajon Valley School District and the El Cajon Police Department, while efforts to expand the program countywide are underway, according to the DA's office.
The San Diego County Office of Education has also provided training materials that include what behavior to be alert for and what to say in response.
"Children who experience trauma in the home often don't complete homework, do poorly on tests, and are withdrawn," District Attorney Summer Stephan said. "This pilot program is a simple way we can alert teachers and school administrators and provide important context so they can monitor the child's behavior and provide support if necessary."