I am drastically altering my Greek course for the upcoming year.  I am glad you did not get involved with the last one.  The book was, in my opinion, awful.  I will recommend it as a reader in the future, but will never teach from it again.

That said, here is what I would recommend for your son.  Start with duolingo.  Greek comes out (so they say) in 9 days, on May 30.  Here is the course offering page: https://www.duolingo.com/courses

Once this class launches, I will be setting up a Greek class via duolingo.  Students will be able to interact with me and other students here.    

As for class next year, I will be teaching Greek again, but I believe I am going to set the class up as a recorded class.  In other words, I will be recording classes each week and will be uploading them for students to watch whenever they like.  I will be teaching through (and re-writing) Henry Nunn’s New Testament Greek.

https://archive.org/details/shortsyntaxofnew00nunn

The last text was seriously complicated.  I will be re-writing this one with the clearest explanations I can.  

Since class will be recorded, any subscriber will have access and your son will be welcome to join and move at his own pace.  I am hoping to have the first lessons up in August.

Let me know if you need more help!

Have a happy Saturday!

Dwane Thomas