I just want to chime in on this. My daughter is in 7th grade. One of the biggest joys of HS is being able to zone in on what your child needs. I do not use a single program. I pick and choose different curriculum based on my daughters needs.
I started HS in the middle of 4th grade. We needed to play catch up on some things and were leaps and bounds ahead in others. I did have the advantage of being a public school teacher for years but on the high school level. I also have a tendency to overbuy and there are times you need to tweak what you are doing.
As of today, we are using books intended for 6th through 10th grade. She is way ahead on verbal skills so we are using 10th grade Wordly Wise, for example. We just started at 5th grade and have completed each text. I also purchased a 6th grade Daily Grams quite a while back but never finished the book so we are finishing it up now. Nothing wrong with spending 5 minutes a day going over good grammar skills and making sure you know the rules.
I use Saxon math but needed some review of fractions and decimals and picked up something else to just zero in on those skills for a month or so and got right back to the rhythm of Saxon and are over half way through what would be 8th grade math.
It is always a challenge but you are one on one and able to go as fast or as slowly as needed. It is a journey you will be glad you took. Best of luck.
Thanks for the reply Grammyof2. We need to sit down this weekend and really come up with a plan. DS is behind in math so we are going to start from 5th grade and work up. As Sweetlovin' said about her DS not knowing the parts of speech, neither does mine. So we have to concentrate on grammar. He is also behind on knowing how to make a proper outline and write a paper. Science and Computers he can probably teach himself-lol. He is practicing programing in C++ and HTML. He usually does very well with spelling and grammar. Social studies comes easy too. Hopefully in a few weeks we will have this in full swing. I am sure I will have more questions.