The art-loving Eichstätt priest Joseph Schlecht stayed at the Campo Santo Teutonico from 1889 to 1891 as chaplain and Görres fellow. In the second year, he acted as director of the RIGG, as Johann Peter Kirsch had left for Fribourg as professor of church history.

After his own return to Eichstätt, he again served as interemistic director in Rome for a few months in 1893. His successor was the Würzburg priest Franz Miltenberger. Schlecht became significant for the Institute by formulating the first rules of procedure (only handwritten, not published), which became the basis for the rules of procedure established by Ehses in 1895 and valid for a long time.

Schlecht was a church history professor in Eichstätt, Dillingen and Freising for many years. He was a friend of Ehses. A personal or scholarly legacy of Schlecht does not seem to have survived.