This seems to be a failing with conservatives. They don't know the rules. It may be that all along, the law was intact, and Davis/Bustamante/MALDEF knew it. But school district administrators didn't, and I'm sure Eastin sent out a memo not to comply. But that doesn't mean anything. The state can violate a federal injunction and force the feds to act. In other words, as a practical matter, they can say, "look. This is our law. Bring federal marshalls to enforce your injunction, but we're going to enforce our laws until the Supreme Court says we can't". Then the feds would be in the position of using federal force to put non-citizens into class rooms, at the expense of citizens. This would be a momentous act of intimidation in American history: The citizen's government pushing them aside to accomodate foreign citizens.
Of course, that's just what the left wants here. To depict it as if illegals are a "discriminated against" group, just like blacks in the South in 1963. But that's a long stretch for most people: the notion of open immigration, and the idea that borders are unjustifiably discriminatory. There isn't any way that citizens of Mexico could allege discrimination by the citizens of the United States. Unless, of course, they claim that this is really Mexico...
The state can violate a federal injunction and force the feds to act. In other words, as a practical matter, they can say, "look. This is our law. Bring federal marshalls to enforce your injunction, but we're going to enforce our laws until the Supreme Court says we can't". Then the feds would be in the position of using federal force to put non-citizens into class rooms, at the expense of citizens. It happened in Little Rock, Arkansas in the 1950s and it can happen again. This is so typical when liberal causes are at stake. But look what happens when the state of California passes legislation in clear violation of the Second Amendment to the U.S. Constitution.
Nothing.