What is the ruling on money earned from working at a university that employs an examination system which the questioner views as deceit and cheating, and what is the ruling on using the interactive electronic books provided by the university for teaching other students?

There is no harm in the salaries earned from teaching, as it is a wage for a permissible act, and the questioner has earned it by performing the teaching as required. As for using electronic books outside the university, one must refer to the university's conditions; if it permits, then it is permissible, otherwise, its conditions must be adhered to.