Originally Posted by dera

I've paid 2.5 hours of ground from 0 to CP. That was my oral prep for my checkrides and oral part of my complex endorsement. So I'd say these numbers could be slashed to 10th _if_ the student prepares correctly. I can only imagine how many don't. It's a lot of work.

In my experience, CFIs with ONLY CFI experience, no matter how much of it, don't have much to teach. Real experience comes from flying in the system, for real. (this wasn't aimed at you, just a general observation).