The attack was brought to the attention of ZDNet today, and when contacted the school was oblivious of the vandalism to its site.
With school winter vacation in full force, the attack points to a pupil with too much time on their hands pulling a prank.
The hacker left a message, including expletives, in bright red text on a black background aimed at the US government.
"It's a well-known exploit on Microsoft's Web serving software," technical executive at Vectra Corportation, Damon Wynne, told ZDNet.
All the culprit has to do is replace the default on the index page with the message they're sending.
The software giant released a patch to fix the flaw in November last year, which indicates that -security on that site hasn't been looked after," Wynne said.
There are about 30 different sites using the same exploit at present, he added.
-This is a classic case of thirteen year olds learning how to do it."
The smug manner in which your reporter announced that the school did not know about the attack does not sit very well with her lack of understanding of the difference between a Denial of Service attack and Site Defacement!
Pull your socks up ZDNet!