Every time I hear about one of these outrageous school decisions I wonder why a large group of parents aren't at the next school board meeting (held every month in my school district). In my school district the school board members want to be on the board. Thus they are responsive to parents who bother to show up at school board meetings.
About ten years ago my school board put out a proposed calender for the following year and invited parents to comment on it. They were looking for comments about the dates of scheduled vacations and parent-go-to-school nights, etc.
I noticed that the calender listed all of the Roman Catholic holidays but no other religious holidays. I made a list of as many of the religious holidays as I could find, which ended up almost being one for every day of the school year, went to the school board meeting and asked to have an all inclusive list of religious holidays shown on the calendar.
The final version of the calendar came out without any religious holidays listed. That wasn't what I had asked but that was what they apparently decided to do to save taxpayers the cost of printing an inclusive calendar instead of an exclusive one.