The reasoning of the opinion runs like this:
1) To have a quality education, it’s very important to have good teachers.
2) The laws on teacher tenure and dismissals produce bad teachers.
3) Because the laws produce bad teachers, they are subject to strict scrutiny.
4) The laws fail strict scrutiny because there is no compelling reason to have such bad laws.
I agree with Step 1 and Step 4. Step 3 strikes me as based on a possible but hardly obvious interpretation of California state precedents on the California constitution. Let’s put those parts of the opinion aside and instead focus on Step 2. In my view, the opinion is odd because it contains almost no argument for Step 2.
Step 2 would seem to require evidence of a causal connection between the laws challenged and the quality of teachers. But we don’t hear about that evidence. Instead, the judge notes that there are a lot of bad teachers in California. He then says that “on the evidence presented at trial” the laws led to the bad teachers and therefore trigger strict scrutiny. But the judge doesn’t say what that evidence is. In effect, he announces himself satisfied about the causal effect without telling us why.
To be fair, I would guess that the judge is ultimately right that those laws create bad teachers. That position certainly matches my ideological instincts. But I would think that a constitutional challenge here requires evidence, not ideology. Given that, it seemed strange that the judge just announced that linkage without providing the evidence for it. Or so it seems to me as a non-expert in California law.