Listened to a good chunk of the hearing. Here's the relevant text from the Parental Bil of Rights (PBOR) for reference...
The law itself says nothing about facemasks. Most importantly he was insistent on due process for school boards per the blue text. Yes they have a burden to demonstrate the requirements if challenged by parents per law, but nowhere is DeSantis or the DOE given the authority to pre-emptively make blanket conclusions without due process for the school boards.
1014.03 Infringement of parental rights.—The state, any of its political subdivisions, any other governmental entity, or any other institution may not infringe on the fundamental rights of a parent to direct the upbringing, education, health care, and mental health of his or her minor child without demonstrating that such action is reasonable and necessary to achieve a compelling state interest and that such action is narrowly tailored and is not otherwise served by a less restrictive means.
The judge outlined how the entire claimed basis for DeSantis authority was the PBOR (the defense didn't claim authority from anywhere else). The judge basically said the defense was relying on the bolded part of the law, but was ignoring the blue highlighted part. He also noted that this law is just a month or so old and he's the first judge in the state to interpret it. The law itself says nothing about facemasks. Most importantly he was insistent on due process for school boards per the blue text. Yes they have a burden to demonstrate the requirements if challenged by parents per law, but nowhere is DeSantis or the DOE given the authority to pre-emptively make blanket conclusions without due process for the school boards.