Adjunct professors typically earn varying amounts for each class they teach, depending on several factors such as the institution, location, and their level of experience. Generally, compensation can range from a few thousand dollars to over $7,000 per course. To summarize, the earnings of adjunct professors per class can differ significantly based on multiple elements. Factors influencing their pay include the type of educational institution, geographical area, and the adjunct's experience. On average, these educators may receive anywhere from a few thousand dollars to more than $7,000 for each course they instruct.