The police officer didn’t witness the crime. They’re making that Judgement based on evidence provided by a third party.
If my house were broken into, and I managed to capture video of the incident, I can’t just hand that to the police and call it a day. The accused has a constitutionally protected right to face me in court, not just the video or the officer I gave the video to, so that their defense can interrogate it fully. What if there is additional context that undermines the narrative presented by this single piece of evidence? If I know the accused and had a reason to see them convicted (such as getting a kickback from any fine they pay), now my clear evidence becomes a little more suspect. Now there’s a very clear motive for me to skew, misinterpret, or completely fabricate the video.
That’s what OP is referring to. If a company is going to install cameras and claim their cameras caught me doing something I shouldn’t have, I have a right to ask that company for more details regarding their claim. Ideally in a public court, with a representative of the company under oath.
School is not just an institution for formal education. Schools are have rights and responsibilities with regard to child care. Most schools act as a co-parent, providing structure, support, and discipline, while also fostering social, emotional, and intellectual growth. This situation is the equivalent of confiding in one parent and not another. Even if their parents were totally cool with names and pronouns, betraying that confidence destroys the child’s trust, agency, and sense of security.
If a parent believes it’s their sole responsibility to rear their child, they should be homeschooling. The second you put a kid on a bus, you’re co-parenting with the state.