I’m honestly not sure how to feel about this for a couple of reasons-

While I do think schools should be given broad freedoms to refuse to do things to cater to specific students- I would like an assurance from this school, which claims to be a non-religious school, that every other religious accommodation would be similarly refused, such as allowing a Jewish child to wear a yarmulke in defiance of school uniform rules or letting a Greek Orthodox child off for the Christmas and Easter they celebrate at a different time from Western Christians. If you are going to have a ‘we do not accommodate for your religious beliefs’ rule in a school that says it is not religious, it should be universally applied.