I just miraculously won an NT with the first class I recruited at Anderson (Knight D3), recruited from C-. My second class was recruited from C- as well, meaning 10 players recruited from C- and 2 from B. We had the second highest RPI in the history of D3.
How often has something like this been done before? I recall that tianyi won at D3 in Naismith with his first class at Menlo, recruiting from C-, and presumably many people have won after taking over good, high prestige teams.