If you're starting to think about keeping high school records for your child's homeschool transcript, a good place to start is HSLDA's Homeschooling Through High School page. I was there this week, and they have several examples of different transcript forms as well as a blank template. I saved each of those to my own computer for future reference.
They also have a link to Transcript Pro, which several of my friends have recommended. I haven't used it, but I found several free articles on that site about high school transcripts, as well. Mistakes commonly made, why one is needed, what it should include, etc. It was very helpful.
I still need to read Sr. High: A Home-Designed Form+U+La, which I bought this Spring, so I can continue to get a grasp on homeschooling through high school. But I wanted to share the free resources I found online this week!