Hi!
In response to your question about teacher workload, I would think that the take home work for Primary M (this is my area) would be less that it is for a traditional El. teacher, as there are no papers to grade, and no reports to read. Most of the work is done in the class. However, a considerable amount of time is spent preparing the environment at the beginning of the school year (1 -2 weeks), as well as in writing conference reports two times a year. Most Directresses would write a monthly (if not weekly) class newsletter or submit to the school newsletter. Also, you will always be setting out new exercises as the children progress as well as routinely rotating materials on the shelves. This takes time outside of class. Are you thinking about going into M primary or elementary training? The el. training is considerably more work as it covers the ages of 6 to 12. Primary training covers 3 to 6 years. Then there is the Assitants to Infancy training for birth to 3.
Good luck with your decision!
Have you seen this link?
http://ami.edu/usa/welcome.html