So, the only basis that remains for my objection to "opt out" as making the mandate palatable, is the "complexity" of the op-out procedure.
One must file an affidavit with the state; after which the state issues a waiver. The original waiver is required by the schools. Obtaining a waiver must be done each two years.
Parents who may object would have to look forward a few weeks, in order to obtain the required state-issued waiver before school starts.
What Perry did to make this process easier was make the form available online.