27 Miss. Code. R. 210-37-101
Any employee having the status of a student who, incidental to such person's status as a student, is employed by the institution being attended, shall be deemed to be in part-time, temporary or intermittent employment and such employment shall not constitute covered employment, except that any active member of PERS who elects to pursue additional education at the institution where employed shall remain an active member, provided such employee continues, without interruption, to be employed in an otherwise covered position. Any person who is employed by any covered agency, other than the educational institution the person is attending, shall be covered in the same manner as non-students. Any student employed by any covered agency for a period of 41/2 months or less (i.e. summer employment) is employed on a temporary basis and shall not be covered by PERS.
Students employed by any educational institution pursuant to a Work Study Program and who must be full-time students at the institution, are part-time employees and are not in covered service.
Student graduate assistants who work while attending the educational institution where they are employed are part-time or temporary employees and such employment is not covered service.
Co-Op students shall be considered students regardless of the number of months employed and shall not be eligible for membership.
Participants in a paid internship program through a covered employer shall be ineligible for membership in PERS where such participants are required under the terms of the paid internship program to be enrolled as full-time undergraduate or graduate students during the regular school term in a program as described in Miss. Code Ann. § 7-7-204 (1972, as amended) or any similar program.
27 Miss. Code. R. 210-37-101