I was a middle school teacher for 20 years, but I cannot imagine what Kindergarten is like.  Maybe like herding cats?
I would not want to deal with all the singing and drawing.
Singing and drawing might be fun.  How old are kids in Kindergarten?
The term kindergarden was coined by the German Friedrich Frobel. I think they are around 5.
I wonder why Mr. Frobel thought of Kindergarten?  Most things start at 1... as in first grade.
The first schools go way back to the 18th century. They were created in Bavaria and Strasbought to serve children whose parents both worked out of the home.