Sherice,
The tribal council makes the decisions for the reservations. They have their own schools, their own policemen and the elders on the council pretty much run the communities for whichever tribe they sit on the council for.
The reservations are like small communities. The Indian schools teach for the most part both English and Native American languages. They speak English for the most part. They also teach culture and history. If you live on or close to a reservation you could probably arrange for your son to understudy with an elder on the Native American Culture. It would not be a bad idea for him to learn the ways of both worlds.
The Cherokee Nation has it's own website. If you go down toward the bottom of the website there is a button to click on that says Tribal Registration. It has a genealogy section there that may or may not be of help to you. The vast majority of the remaining Cherokee Heritage are in Oklahoma.
Here is the Cherokee Nation website.
Cherokee Nation
There is a free Indian Genealogy site where you can look up Michigan or wherever your husband's family is from and find the tribal information at this site.
Indian Reservations 1908
Good Luck to you, I hope you find what you are looking for... and here is hoping your sone can find a part of his rich Native American Heritage and take pride in his great ancestry.
Shirley