Twenty percent of Texas school districts are arming teachers and staff with guns.TEXAS (KTRK) -- One month after the deadly Santa Fe High School shooting, more districts are now allowing staff members to carry weapons.Timeline of Santa Fe shooting[Ads /]The Texas Association of School Boards says 172 districts had weapons in February, and it's now up to 217, which is 20 percent of all of the school districts in Texas. Report a correction or typo