I am looking for a book I read in the late 80s-early 90s. It was about a 6th grade (I think) class that was terrible. They ran over teachers, subs, etc. until this teacher came in and turned thing da round using magic. Almost like a Mary Poppins or Nanny McPhee situation. I remember crazy situations about spitballs or something similar and snippets of old childhood songs like “row, row, row your boat gently down the stream, throw your teacher overboard…” and “miss Suzy had steam boat, the steamboat went to…hello operator, give me number 9…” please help! Reader Suggestion: Thirteen Ways to Sink a Sub By Jamie Gilson. Update from requestor: the suggested title is, sadly, not the book I am thinking of. Another detail that I seem to remember is that it wasn’t just a sub. I seem to remember that it might have been a husband/wife sub duo???? Maybe…. UPDATED SUGGESTION: The Trouble with Miss Switch by Barbara Brooks Wallace Update from requestor: not Miss Switch either, keep the suggestions coming!