I read his book:
The Essential 55: An Award-Winning Educator's Rules For Discovering the Successful Student in Every Child, when I was still a new teacher. This book inspired me to create a set of classroom rules with my students. The students got to have some input with creating some of the classroom rules, while I made some of the others. We discussed how to make these rules work in our class and how to hold each other accountable. The students helped set the consequences for those who chose not to follow the rules. The kids had a great time trying to help me watch for rule-breakers. The students would write the rule they broke a set number of times. One of the funniest memories I had was a student I will just call J. My rule number 3 was "Always use your manners by saying 'Yes, ma'am', 'No, ma'am', 'Yes, sir', or 'No, sir'." This was one of the longest rules that was written. I got tired of the students answering with yeah and naw! J broke this rule several times before he realized I meant business. After writing this rule several times, he never missed an opportunity to answer a question with ma'am or sir. As a matter of fact, I saw him several years later and he was so respectful! Sometimes it's the little things that help mold a student into a different person... I'm not sure where this student is today, but I'm sure he remembers Rule #3!
Here is some information about the book that helped me survive a few tough classes early in my career. (Information from book review on Amazon)