So I accidentally stubbled upon a bug that could give you infinite money in the latest version (0.7.9.4).
After becoming an instructor, click on the "Tutor" option. After you've finishing tutoring click on the "Manage Slave" Option. Under the "Student" Colum, select one of the 4 options available. What should appear is the summary screen for your "Tutor". If you click on "Manage Slave" you will earn money as well as standing in the academy. You can click on the "Manage Slave" button again and again, I'll continue to generate Money and Standing (Academy) infinitely. In addition, the time will not increase as well.