Do skill port classes count as promotion points? If so does it go toward correspondence hours or something different?

As your question was already answered by SSG John Carpenter I'll just add, if you want the full details you can always check the reg (AR 600-8-19) specifically under the Military Education section.

Correspondence.

What are Port Classes not sure what they are can someone please tell me?
SSG MARK FRANZEN
USA VET