Madam Undersecretary Dolores Umbridge (who would later assume the titles of Hogwarts High Inquisitor and Headmistress) enacted many educational decrees during her time at Hogwarts. One of them can be found at this year’s Hallween house.
To create the housing for the decrees, I gathered some thin wood and several pieces of 1X2s.
I found several educational decrees online, chose one (the one decreeing Dolores Umbridge as Hogwarts High Inquisitor) and printed it out on regular 8½ X 11 paper. Then, I measured the pieces to create a frame around it. (the main 1X2s were about 12 in. long).