OK, probably nobody else cares who Horace Mann is, but I finally found out! Read the article, he's halfway down it, but it's really not that exciting.
The exciting thing is that I've wondered for the last 8 years who Horace Mann is. This is because there is a school in my district called Horace Mann School. It's interesting that you can tell which schools are old and which ones are the "new small schools" because the old schools have names of people that are dead. Some are obvious: Martin Luther King, Jr. School, Lincoln School, etc. Others, like Horace Mann and John Swett, not so obvious. I student taught, in a different city, at Fern Bacon School and I always felt bad for anyone named Fern Bacon.
The new schools are all called very inspiring names like Think College Now and Futures (sounds like an item on the stock market - its sister school could be Commodities). Or else they have really long names with acronyms.
Anyway, the reason I remember Horace Mann School is because the kids always called it "Horseman." "She's leaving our school and going to Horseman School." I think they all thought that was the real name.