Rudolf Dreikurs was an Austrian psychiatrist and educator. He emigrated to the United States in 1937, in order to escape Nazi persecution, because of his jewish background. Dreikurs became a professor of psychiatry at the Chicago Medical School in 1942.
Had many practical ideas on approaching discipline and conflict with students. I liked the advice to use natural/logical consequences instead of punishment, and to not reward children for doing what is expected of them.
Has a good explanation of why children misbehave and some practical ways to correct this behavior. Not sure I agree 100% with what he says, but I enjoyed a lot of it.
I knew Pearl as one of my closest friends. I miss her and our discussions, many about this book. If you have any questions I may be able to answer you.