The song Hotte and Monika are singing before playing one trick with Zackgiebel is a joke about the song "Warte, warte nur ein Weilchen", written by Walter and Willi Kollo from the operetta "Marietta" in 1924.
After "Immer Ärger mit den Paukern" in 1968 this is the second movie in which Peter Weck is playing a school teacher, on whom students are playing tricks on and later gets misunderstood by the police. One year later he played a similar character in "Unsre Pauker gehen in die Luft".
When Hotte and his classmates are imitating the influenza he is mentioning Hongkong. It is a reference to the Influenza A virus subtype H3N2, called in Germany as the "Hong Kong-Influenza" (Hong Kong-Grippe), which started in Hong Kong in 1968, one year before the movie was released. During the period between 1968 and the end in 1970 around one million people died worldwide, Around 30000 people died in Germany.