EAST ROCKAWAY - School administrators have told more than a dozen East Rockaway High School students that they won't be able to attend their prom or graduation this week due to a senior prank.

Thomas Gagliardi says he and 14 other students were banned from their prom and graduation because of an annual water balloon fight that some students say started off of school property.

East Rockaway School Superintendent Dr. Roseanne Melucci said in a statement that the "students were engaged in conduct that endangered the safety and welfare of other students and school personnel."

Two administrators were hit by water balloons, but students say the teens who threw them are not East Rockaway students.