I don't think you're gonna find an official answer, on that, just opinions.
I'm of the opinion, if you are using the same internet, you were using before you started the classes, it is not deductible (you cannot claim it for the credit) because you didn't pay actually for anything for education. If you had to get internet, just to do the classes, the yes (probably) or if you had to upgrade the internet (the additional cost would count). Unlikely in the 21st century.
That said, here's a real life example: Family member starting working from home. The rural internet couldn't handle the additional load. He had to set up his own internet. Deductible.
