In 9th and 10th grade, I took individualized science courses. Biology in 9th, chemistry in 10th. It was nice to move through the material at my own pace.
I don't remember all of the grading criteria for each unit, but I know that one of the things we were graded on was how well we worked on our own.
When I came to the unit on blood types, I couldn't bring myself to prick my fingertip to collect a sample. I ended up asking my teacher to prick it for me.
She totally dinged me on points because of that. It's like she drew my blood twice.