I'm going during that week and had the same concerns about crowds, so I did a little investigating. I checked the calendars for a lot of the Southern California schools districts. About half of them just have Tuesday off, and about half of them have both Monday and Tuesday off. While I know that it's not just Southern California school holidays that will affect crowds, I figured it was a decent snapshot of school holidays in general for Veteran's day.
Happily, we are going to be there all that week, so we are going to plan around what will probably be the busiest days!