HsvTeacher and I have both said that the shoes are noticeable to us even in a well lit room. Do you really think we are both lying about that?
I have no idea if you are lying but let me put it a better way. While I may notice them (and I don't notice them) they are not noticeable in a distractable way. To me they are no more noticeable than having tinkerbell on your shoes. You look and think "cute" and then it is off the radar.
As for the bolded, if the school rules contain any mention of "other distractions" or anything like that, then that's all they need to be able to say (rightfully) that these shoes are not allowed. Yes, it's unfortunate that they didn't tell the OP before school started. Obviously it would have been better for her to know before she did her back to school shopping. But they did tell her during the first week of school. They may not have known the shoes were a problem for a particular student until after school started.
What do you expect the school to do if they are informed that the flashing shoes are a problem for a child with a documented medical problem? They
have to make accomodations for that child. They have no choice. You've been on the Disboards long enough to have seen all the threads about parents who are fighting to force schools to accomodate their kids' different disablilities and medical issues. If there's a parent whose kid has migraines or seizures and who believes (rightly or wrongly) that the flashing shoes are causing the problem, they are going to demand that the school do something about the shoes. The administrators can't tell the child's parents that the kid is just going to have to put up with the seizures or migraines. They also
can't provide documentation about the specifics of the situation to the other parents in order to justify the new rule. They have told the OP that her child can't wear the shoes to school because they can contribute to another child's medical problem. If you don't think the school should be doing that, then what do you think they should do to accomodate the child with the issue?