I agree generally with TPM and CADad but might expand on the exceptions somewhat.
I tend to feel that most good D1 programs are more likely to have motivated, experienced pitching coaches who will not make too many bush-league mistakes in the training programs for their pitchers.
Perhaps the same can be said for D2-level schools, I'm not quite as sure.
However, I've seen some real variability among California JUCO programs--even ones that have a strong track record of overall success. The problem for these programs is: Assistant Coaches are paid very, very little for their time at JUCO level and most of them have second jobs to pay the rent. Given that the programs cannot pay for the best available coaching talent, they must do their best with whomever is available. Sometimes that works out very well, and sometimes not so well.