Interns tend to get better grades because they are better able to see the relevancy of coursework to real-world situations.
By completing an internship you may be able to earn college credit toward your degree. A lot depends on the major, whether an internship is required, or if you have elective credits that could be satisfied with internship credits. You will also have to meet certain criteria established by the college in order to qualify for an internship to earn credit.
You might make money. Not all internships are paid, but those that do pay can help you earn money to put toward your tuition or living expenses.
The National Association of Colleges and Employers (NACE) reported in May 2010 that newly hired entry-level candidates with internship experience received salary offers that were 31 percent higher than those who had no internship experience.