No exactly. I saw him in an interview on Fox News yesterday and according to his own words, he was told not to mention God or any god.
Now I think that's terrible, but nevertheless he knew the rule and broke it.
Does the "Lord's Prayer" mention "God or any god?"
It is addressed to "Our Father in Heaven."
So, he really didn't mention God's name or any other god's name.
He stated a term of relationship to the Heavenly Father.
Now, you and I both recognize that Father as God, but the prayer does not make that distinction.
He could just as easily have quoted any portion of Scripture and it still would not violate the law.
Remember there was a supreme court case just recently that challenged whether cheer/pep banners could bear quotes from the Bible? They can.
So, no law was broken, and it was not wrong for him to quote the Bible.
What would have been wrong is if he said, "Lets all join in and pray this prayer to God." THAT would have violated the typical school standards.
A student can stand in the middle of the hall and quote the Bible as long as there is no obstruction, inciting to riot or other such anomalies to the learning by students.
Too many Christians have cowed to the lie that God and the Bible are outlawed. Even school staffs have bowed under pressure and the mere threat of lawsuit.
BUT, there is NO law, and any such laws have been shot down by the courts as a violation of personal rights.