What does "CCD" stand for relative to the catholic education classes?

Catholic Christian Doctrine

"CCD" actually stands for Confraternity of Christian Doctrine (but yes, Catholic Christian Doctrine is what it means)

If you say so Rick, I was not sure, so I searched it and found that meaning on one of the Catholic Web sites.

It was always just another name for Catholic education departments, one of those letter names you never think about.

Lol, yep, with me too. I call it "trivia". You're right as far as what it means.