The constitution protects our citizens from being forced into doing something unless they've been accused of a crime. One is not required to pledge the allegiance and any attempt is a violation of common sense and the right to practice their religion as they see fit. This includes the right NOT to worship a God.
The tenth amendment does not give the States license to violate rights.
Nonsense.
The First Amendment says...
"Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof;"What part of of the meaning of "Congress" is so elusive to you?
The First Amendment has no application to a dispute between a private individual and a school, delusions of the rogue judiciary notwithstanding.