Imagine a radical school curriculum where 4 and 5 year old children are required to visit the homes of every student in the class. I speak with Sarah Leibowits, a lower school educator at the Manhattan Country School in New York, who has taken her class on  these very home visits for 20 years. Established as a 'private school with a public mission’,  lessons at the school from kindergarten through 8th grade, are built on the celebration of unique difference.