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Browse credit cards from a variety of issuers to see if there's a better card for you.
Are you asking which student credit cards allow you to graduate? Or regular cc's that allow PC?
Both student and regular CCs that someone with fair credit can apply for.
In general, the list is long. For a more tailored response, you could provide more information. Types of cards you are looking for ie travel, cashback, rewards. Scores, baddies, inq's.
Beside the Student Disvover, any other cc's? How long have you had Discover?
In 4-6 mos, you could add Barclays SallieMae, Chase Freedomor possibly Amex BCE/BCP