Creating rules in order to manage students' discipline might not be a particularly novel and groundbreaking idea. But as a teacher, I know that creating rules and successfully implementing them are two completely different things.
In his book, The Essential 55, Mr. Clark shares with readers his tried-and-tested rules and how they work in his classroom.

For me, the rules themselves are not the main attraction of the book. But the stories behind them are. My favourite chapter is Rule 11: "Surprise others by performing random acts of kindness. Go out of your way to do something surprisingly kind and generous for someone at least once a month". Coincidentally, it is the longest chapter in the book. The chapter details one of the most amazing projects Mr. Clark's students were involved in and how going out of your way to do something wonderful for others is oh-so worth it.
As evident with Rule 11, the set of rules does not only concern classroom dos and don'ts (e.g. Rule 19: "When homework is assigned, do not moan or complain"). They also encompass eating etiquette, good manners, kind acts and living you life to the fullest.
It always annoys me when my students litter, forget to say 'Thank you', cheat during exams, curse, etc. But I haven't really done anything about it other than verbally reprimanding them.
Sometimes, I even choose to ignore the acts. I mean, if I had to reprimand each and every misbehaviour, I would never get to classes on time. I would have to stop every 2 metres or so to ask students to tuck in their shirts/use the boys' staircase/ pick up the trash/etc. I figured that I need to choose my battles, no?
My lack of action maintains the status quo or may have even exacerbated it.
Therefore, I was really impressed with what Mr. Clark has achieved. I concur with him that "kids need and like structure" but I guess, sometimes I'm just not strong-willed and steadfast enough to implement one.
Oftentimes, when I grew frustrated, I just complained; "Don't their parents teach them these things at home?"
Now I realise that though parents are ultimately responsible for instilling good values in their children, teachers should do their bit too.
Another major thing that I got from reading the book is how dedicated a teacher should be. Ron Clark is an award-winning teacher and it's not hard to see why. He typically spends hundreds of dollars a month on books/contest prizes/other items for his students, take them on 25-30 small trips a year, bake them cookies, learned to double-Dutch, etc.
Wow. My effort seems meagre when compared to his and yet I often complain about burnout and tiredness.
Lastly, I was struck by his teaching philosophy. When he was about to take over his first class, the teacher before him said; "As long as you can affect the life of one child, you've been a success".
He disagreed with that stand. "[He approaches] each year with the knowledge that [he has] only one year to make a life's worth of difference in each child in that classroom, and [he gives] it everything [he's] got".
Feeling inspired already? Then, do get hold of the book and read it! :)