Asked for numbers, officials at many San Antonio-area school districts have declined to say how many lockdowns their campuses endured this year or what triggered them actual threats, false rumors or outright hoaxes.
Get latest articles and stories on World at LatestLY. Alarmed parents laid siege to a Texas high school Tuesday after a classroom shooting report that ultimately proved to be false. World News | Parents Besiege Texas High School After False Shooting Call.