Four, plus the Dixon-Shepp Quartet and the split LP with Dixon's 7-tette and the NY Contemporary Five. Dixon had a contract with Savoy but for a variety of reasons felt it worthy to give the remaining albums he owed to Savoy to his students, and take on a role as a producer (and in at least one case, arranger). I forget the whole story, but he discusses it in Dixonia (and elsewhere).