That would also be false: https://en.wikipedia.org/wiki/Ceremonial_deism

Nah, that's a bullshit excuse for religious indoctrination.

Now, will you admit you were incorrect about the pledge of allegiance being mandatory in schools?

No. If the pledge must be taught in school and some individual students can opt out of repeating that indoctrination, doesn't mean that the pledge itself is not mandatory subject in school. I did not write that all students must recite it.

All your "ceremonial deism" reference proves is that there is a giant loophole for the federal government to indoctrinate on religion and not just state and lower levels.