Wow, have to say I'm impressed that others have used this. I do like the 1 after another class schedule.
An accredited school you might want to look into is Upper Iowa University. Name sounds totally fake, I know, but they are actually the oldest non-religious college in Iowa, and they jumped to online schooling just a bit ahead of everyone, so have a user-friendly program, and classes can be completed over 5 eight week terms.
So, if you can handle a heavier load, you can do 45 credits a year.