Probably not "the incident" anymore, since it was almost 30 years ago now and no one left there likely remembers.
But a couple of years after I graduated, one of the kids who was a couple of grades behind me sneaked into the school at night, lit a bunch of candles on the floor of the chemistry lab and turned on all the gas taps and put towels under the doors so that the room would fill with gas starting from the top to the bottom. (I guess his chemistry class came in handy since he was smart enough to know that gases float to the top, giving him time to escape.
He went to Juvie for a while I believe, and then ended up living a pretty normal life. Last I heard he had been one of the people listed for the doomed-to-never-actually-happen "100 settlers on a one way trip to Mars" project. Haven't heard anything about him lately since I long ago deleted Facebook and so have no real contact with the people I went to highschool with anymore (just like the old days and I love it)
edited - Sorry, thought he was short-listed. But he was cut before the short-list was announced. Edited to change.
Took out the entire quarter section of the school, if I remember correctly. Though "explosion" isn't technically correct since it was the fire that did the damage. The lab was never going to be sealed tight no matter how many towels he used, so the gas was never under the types of pressure necessary to cause an explosion; just a fireball that ignited everything around it.