Yes, they do. I don't know when this started, but my oldest child graduated from high school four years ago and it was a requirement then. Although she had a full high-schooler's schedule including extracurriculars, she didn't really have a problem fulfilling the requirement (although it was a bit difficult finding a way to do it).

However, I don't think it really brought any benefits aside from providing free labor. She and most of her classmates just marked it up as pointless busywork. It's just one more bureaucratic  hoop they have to jump through.