退廃芸術
From 1927 on, Crodel taught printing and monumental painting at the "Burg Giebichenstein", the Academy of Arts and Crafts in Halle until 1933 when he was dismissed, but he continued to teach in a private circle at the house of Paul Frankl. In these years, Crodels murals in Halle and the murals dedicated to Goethe in 1932 at Bad Lauchstädt were destroyed in summer 1933 and had been ejected from the gleichgeschaltet (Nazi sympathetic Arts organisation) group for creating Degenerate art. At this time many refugees brought Crodels paintings and prints, which now are found at Louisville, The North Carolina Museum of Art, Raleigh, the Virginia Museum of Fine Arts and the Luther College, Decorah.