[zalebz]

The neighbor has a catalog of audio recordings of conversations had on the porch 24/7.

Does this school have traffic 24/7 and do you broadcast everything from your front steps via a megaphone (and keep recordings)?

There are many comments here about video/audio recordings from public onto private property however there are various degrees of recording.

If there was a public park across the street from your house and someone setup surveillance-level equipment pointed at your front door, I'm not sure there is a rational judge who would consider this "oh well, they're on public land, nothing we can do here".