Saxon Math has been a homeschool mainstay for 20+ years. It was written by John Saxon and remained a family company until 2004 when it was sold to Harcourt Achieve. It is still however the same high quality program as when it was owned by the Saxons. This curriculum has been used by homeschoolers practicing nearly every homeschool method. We use 2 Math programs in our homeschool for the Grammar Stage we use Christian Light Mathematics.