Another clue may come from the meaning of the name Zerubbabel: The name Zerubbabel consists of two parts. The second part of this name is obviously the same as the Hebrew word for Babel / Babylon. The origin of the first part is a bit of a mystery.
Insubordination is generally a punishable offense in hierarchical organizations which depend on people lower in the chain of command doing what they are expected to do.
Insubordination against reasonable rules of the board of education. 3. Moral misconduct. 4. Disability, as shown by competent medical evidence. 5. Elimination of the position to which the teacher was appointed or loss of a position to another teacher.