Big Book O Rules

The Big Book O Rules is the official school rulebook for Jerome Horwitz Elementary School written by Mr. Krupp. It only made a physical appearance in the book Captain Underpants and the Wrath of the Wicked Wedgie Woman.

There are two known rules in the book:
 * Rule 411: Don't kick school property into space.
 * Rule 7,734: Don't transform into big, flying robots during afternoon recess.