Normally, you must be at least 18 years old before you can be employed as a co-op.
Special arrangements are possible for younger students.
Some co-op positions are open only to U.S. Citizens. However, times and hiring practices change. A number of international students are now in the Co-op Program. Frequent changes of residence between college and work demand a high degree of individual flexibility. To be considered for this program as a married student, you should develop a workable program for yourself and your family.