The co-op movement is alive and well in home schooling, that's for sure. Some friends of mine here founded First Class Ministries, which is a co-op that has spread like wildfire all over the country. Friday School, as it's called, is a wonderful opportunity for the children to receive education in subjects they are interested in that their parents don't have a clue about or are not able to teach.
WA (among others) is a wonderful state for home schooling, as home schooled students can take classes, do sports, or music, or take advantage of other opportunities. My son took biology, as setting up a lab in our kitchen was not feasible.

He also took shop, and when his mathematical giftedness, which he did not inherit from me, outpaced my ability to teach him, he took advanced math classes. I have a friend, a former public school science teacher, who now teaches several middle school and high school home school science classes in a facility where she can set up bio and chem labs.
It is amazing to me how the educational publishers have come alongside home schoolers. The extent and quality of curricula available today specifically for home schooling is astounding. Using language as an example, it's not like when I was first starting out and teaching my oldest French from my old college textbook, having to make up tests as I went along. Now both Rosetta Stone, Instant Immersion, and others have amazing courses in a wide variety of languages. My younger kids can learn French in an interesting, exciting way and learn grammar and pronunciation in a way that I could never duplicate.
Home schooling is not for everyone, and home schooling in high school can be especially scary since it really counts then towards college and life. Everyone has to make their own decisions for their own family. Home schoolers are pretty independent, and nothing works the same for everyone. For me, I want to light the fire of curiosity and make my children life-long learners, giving them the confidence and the tools they need to set goals and achieve them. That generally happens when they are older, and there is nothing more satisfying than watching them grab hold of their own educational journey. Of course, that means that I occasionally have to light a fire under their tails in the subjects they aren't interested in at the moment.
