The holiday is recognized by the state of California, and all state government offices, community colleges, and libraries are going to be closed. Schools, however, will not be. Be aware that some schools will have student-staged walk-outs; many students will simply not show up.
As for me, I will celebrate by wearing traditional Mexican clothing. Instead of leading a walk-out, I will stage a teach-in. Instead of typical math lessons, we will have a lesson on the economic impact of “illegal” immigration, the Treaty of Guadalupe Hidalgo, along with a mini-bio of the main man himself.
Oh, and I won’t be eating any grapes.