Still following rabbit-trails. Found this, by Art Reed, who used to work for Saxon Publishers. Click on Newsletters. http://www.homeschoolwithsaxon.com/index.php He makes tons of very good points. He also says don't bother with the NEW-Saxon Fourth Edition Algebra 1 and 2 because they have stripped out all the Geometry to make their new Geometry book -- because you make more money selling 3 books instead of 2. He highly recommends using the Third Editions (hardbacks) while you can still get them. He says the 2nd (HB) or 3rd (SC) Editions of Math 54 are almost exactly the same, problem for problem. Use either. Same with Math 65. For Math 76, he recommends the 3rd (HB) or 4th (SC), which again are almost identical. He says the 1st and 2nd editions are outdated and not up to the 3rd ed in concepts, so a student using them might have some difficulty in going from that to the 3rd ed of 87. Students who score eighty-five or better on the last five tests in this level book indicate they are ready to move to Algebra ½, 3rd edition. Student’s who encounter difficulty in the last part of Math 76, reflected by lower test scores, can easily make up their shortcomings by proceeding to Math 87 rather than Algebra ½. Math 87's 2nd (HB) and 3rd (SC) are also nearly identical. He also said this: Students who successfully complete the entire textbook and score eighty-five or better on their last five or six tests can skip the Algebra ½ textbook and proceed directly to the Algebra 1, 3rd edition textbook. Both Math 87 and algebra ½ get the student ready for Algebra 1; however, the Math 87 textbooks start off a bit slower with a bit more review of earlier concepts than does the Algebra ½ book. This enables students who encountered difficulty in Math 76 to review earlier concepts they had difficulty with and to successful later in the textbook. Students who encounter difficulty in the last part of this book will find that going into Algebra ½ before they move to the Algebra 1 course will strengthen their knowledge and ability of the basics necessary to be successful in the Algebra 1 course. Algebra 1/2 Use the 3rd edition textbook rather than the older 2nd edition as the 3rd edition contains the lesson concept reference numbers which refer the student back to the lesson that introduced the concept of the numbered problem they’re having trouble with. From here through Calculus, all books are hard-backed. Algebra 1 Use the academically stronger 3rd edition. Algebra 2 Use either the 2nd or 3rd edition. The solutions manual for the 3rd edition has solutions for the daily practice problems that the 2nd ed solutions manual doesn't have. Advanced Math Use the 2nd edition. Calculus The 1st edition is still a really good book for calculus. A student finishing all these last 4 books successfully will have two algebra, one geometry, one semester of trig and one semester of pre-calculus.