Sarah's probably worried about high school because I am. Although she's only entering 8th grade she's thinking ahead. I'm reading everything I can get my hands on about homeschooling high school. Seems like the best advice so far is to look at college entrance requirements and work backwards.
Currently I am reading Barb Shelton's book, Senior High: A Home Designed Form+U+La. Although she doesn't seem sold on the idea of college (I am planning on it for my kids) there are some helpful ideas for planning and record keeping. Another point she brings up is that although we need to be mindful of requirements if our children are college bound, we don't need to necessarily follow the standard public school format for teaching required subjects to be eligible for college admission. That gave me alot to think about!