There are plenty of ways to teach public speaking in your homeschool!
You can focus on speech and debate. It's pretty intense, and takes a lot of work on the part of the child. On the other hand, if your child likes it, it's a great way to include English and Social Studies through that delight directed learning. Try contacting these organizations.
For all classes on the transcript, I recommend either a whole or half credit, not smaller or larger. Here an easy to remember "formula" for dual enrollment college classes:
Don't you wish there was a book called "Getting Your Teen to Sleep at Night" or perhaps "7 Highly Effective Sleep Habits of Healthy Teens"? There just HAS to be