Unless your high-schooler is really into history, this curriculum is a lot of work for no real credit. Oak Meadow is a Waldorf-inspired curriculum and Core Curriculum is based on your child's learning style. C.C. can be secular or Christian, whichever you choose. They both cost a few hundred dollars, but can be lower or higher depending on what you want to do. Offers FREE 8-week Trial Basis.
Web site lists positives and negatives of the curriculum.
Sam's also has crafts, novels, etc. Amazing what kids learn from staring at the table. We follow our interests, and the kids are at or above their grade levels. 21 North Main offers textbooks to homeschoolers. Search by ISBN, subject, title or grade.