When I was in high school, it was I believe 3 days before they extended the year. On a side note, I remember my 8th grade graduation, we had three funnel clouds above our school. All the power was out. The school was pitch black in a lot of the parts. We ended up sitting down in the hall next to the downstairs locker rooms for about 3 hours. The ironic thing about this entire situation is that we were going to watch Twister that day in science class.
Fast forward 4 years to 2004 for my actual graduation, similar situation. While we didn't lose power, we still had funnel clouds above our school once again. Talk about jynxed.
One last thing, my junior year we had a bomb threat. The extent of it however, was someone putting a sign that said "Bomb" on it in one of the elementary bathrooms. Didn't take any precautions though. Evacuated the school and went to the bus barns for about 2 hours.