I found on a website that the ORANGE County schools in CA are on spring break from March 31st to April 4th of 2008.
We are thinking of hitting DL/DCA the 2nd or 3rd week of March and find this good news too.
However, spring break for the rest of the country varies from Mid March to late April, and due to the promos like "Adult tickets for kids prices" that DL offered last year and "kids fly free" that our favorite airline (Alaska) offers, the parks will be busy!!
Have a touring plan ready and consider yourself lucky if it isn't as crazy as can be....