This is done for two reasons:
1) It allows the State legislature to panic the citizens saying that if they don’t raise taxes, thousands of teachers will be laid off.
2) It helps the CTA in negotiations by allowing them to panic the local parents into forcing the school boards to agree to anything the CTA wants.
Winner !! You are correct. And furthermore, this happens EVERY YEAR. The school districts are required by law to post these advance notices. And then the following school year. Almost EVERY teacher is hired back. This is standard operating procedure as usual for California. Same 'ol, same 'ol. And after this proposed tax increases fail at the ballot box this year , a FEW teachers will be laid off, while class sizes stay about the same, because so many students are leaving California with their out of work, overtaxed parents. And so many more will become home schooled.