Ummm,
if you don't want to leave school, then join ROTC.

Reserves and Guard pay/benefits likely better than a part time job (Mostly for the Guard since some states provide free schooling for their Guard folks)
National Guard Education Benefits

But, as mentioned, they are paying you to be available if needed. Joining the Guard/Reserve should still mostly be about service.
Duty-honor-country

Service before self
Semper Fi
Commitment
Selfless Service