April 14, 2003 New Orleans, Louisiana. 1 Dead, 3 Injured- John Mc Donogh High School shooting.
Two men opened fire with an AK-47 and a handgun in the gymnasium of John McDonogh High School, killing a 15-year-old student and wounding three female students. One shooter was sentenced to life imprisonment, and the second was sentenced to 15 years.
Source: List of school shootings in the United States – Wikipedia, the free encyclopedia