I also wanted to add that there are some free online schools for a HS diploma. I don't where you live in Wyoming, but Connections Academy has a free school in Jackson Hole: http://www.connectionsacademy.com/wyoming-school/home.aspx

I think you do most of the coursework online, but may need to go to the center for tests and assessments. They are also accredited by the state, which is an important thing to look for.