Depending on the actual circumstances, when a student is determined to be "Out of Status," the usual consequence is that the I-20 is terminated (or cancelled) in the SEVIS system. Once the I-20 is terminated, if the student is eligible, he or she should file a request to be "reinstated to F-1 status" so that they may legally remain in the U.S. and continue their studies. Reinstatement should be done as soon as possible after the status violation to avoid any problems with Immigration and Customs Enforcement (ICE). Reinstatement is costly and it stays on the immigration record permanently and does affect eligibility to apply for certain immigration benefits such as being authorized to work. The PDSO will advise you and provide you with the proper forms. In very serious cases, you may need to contact an immigration attorney.