Up until last season, I was the coach at St. Mary's. I inherited a program with A+ prestige, did a pretty good job of keeping the prestige at A+ in the 10 seasons I was there.  I was hoping that I handed the program off to a coach that could keep the program at an A+ level.

I assumed at some point the prestige would eventually drop, but I did not think it would take just one season.  Does that prestige drop make sense?  Looks like the team was upset in the 1st round and didn't have smashing success for wins or rpi.  But it seems good enough to stay at A+, especially with the three seasons beforehand.

It's not surprising. 24 wins, 1st round NT bust, and no CT championship. The effect of your NC loss also now have the lowest weight in the 4 yr window. 

Yeah, I wish the one-and-done coach would have done a bit more but I thought it still would have been good enough.  Seems like I remember some threads where that type of season was good enough to push others to A+ and this team was already there.

Maybe it dropped because the coach left and it went sim?  Coaching changes can impact prestige at least at D1, maybe they can at D2 as well and the worst possible coaching change was enough to drop what does certainly look like it would still be an A+ to an A?

Beach, I think it was the double whammy of losing the CT and getting nocked out in the 1st round. If you look at all the seasons you were there, you had one 1st round loss, but won the CT that year, one 2nd round, won the CT that year, and everything else was Sweet 16 or better.

CT success only has very minimal impact on prestige. 

Prestige in D2/D3 is impacted way too much by the most recent season.