There are several reasons to worry about diploma mills, including the fact they do not truly offer what they promise — which is a high quality education. Because these schools offer phony, or at least somewhat questionable, degrees and certificates, they even put graduates at risk of lying about their educational background and credentials when they begin applying for jobs. In the meantime, diploma mills can charge exorbitant tuition and fees that are not commensurate with the degree program being pursued. Diploma mills are frequently subject to government action as well, and they can close their doors and leave their students in a lurch. Diploma mills are even known for lying to potential students in order to get them to enroll. For example, a school may use deceptive advertising and marketing tactics to entice new students to enroll.