Dizzymomx4-
We tried SoS a few years back for our older 2 children. While I thought the curriculum was great, I found the software frustrating for my girls. It required exact word answers to questions and leaves no room for personal interpretation, imho. I wish I had a specific scenario that I could give you directly from the program, but I can't. I will give you a vague, disney-fied made up question:
Lesson question: What famous mouse is the star of the black and white cartoon 'Steamboat Willie'?
My dd's answer: Mickey
Program: Wrong. Correct answer: Mickey Mouse
My daugthers would think that because the word "mouse" was in the question, the program was looking for the name of the mouse only.
Sorry for the poor example, but I hope you get the gist of it. Just wanted to offer my opinion. That being said, for some the math program may be a good choice because there's little interpretation with numbers
I frequently visit a homeschooling message board that has a specific place for hsing during the high school years. Feel free to pm me and I'd be glad to give you the info. Personally, I just searched the web for the graduation requirements for your local school district (how many credits of what study area etc). I use that as a guide and keep a transcript for my dd. I have known several homeschool graduates and not one has been denied college admission based on the fact that they are a homeschooler.
You may also want to check into CLEP (also known as clepping). You can earn dual credit for high school and college courses. You study at home and then take a CLEP test at a local testing center. If the student passes, they earn college credits. I know of a fabulous website/ info/ support group for this and would be very happy to give you that info as well. My dd has chosen not to CLEP at this point in time.
Here's some core programs that my dd 15 is doing this year:
Math: Teaching Textbooks
English: Literary Lessons from Lord of the Rings
Science: Apologia Chemistry
History: Beautiful Feet US and World History