I just explain the concepts.
I teach a self-contained class for students with behavior disabilities in 6th, 7th and 8th grades. As you can imagine some of my students' parents have behavior disabilities as well.
I say, "I could be assigning a 45 minute detention like the other teachers do. But I don't think that will actually do anything for your student. It will make them resent me, which damages my relationship with them, and it will waste their time. Several studies have shown that 45 minutes of detention aren't really any more effective than 5 minutes of detention. In addition, your student is having difficulty following the rules regularly, and I believe this is because he/she has not really internalized the rule so they don't even need to think to follow it. The gesture/repetition is based on brain research that shows doing this will help your student memorize the rule so well I won't even have to tell them about it, they'll just remember."
That usually works. For the parents who are still not interested, I accept the things I cannot change, and politely let them know that this is my discipline system, and the letter is to let them know that their student required a disciplinary action in my classroom that day, and if they disagree with my discipline system they are free to use their own at home instead of the practice.
WBT Intern
2011-2012