A student who has not missed three consecutive semesters (excluding the summer term) may graduate under the catalog requirements in effect at the time he or she began the program of study. If desired and requested in writing, the student may choose to graduate under a later years requirement for that program. A student, who misses three consecutive semesters (excluding the summer term), will graduate under the program requirements in effect at the time of his or her return. A student who changes programs must meet the program requirements in effect at the time of the program change.