Question: How do you increase your credit score when 90% of your debt are student loan.
Answer: If your student loans are in default then that is going to be a problem and you may need to depend on secured cards for a while. If they are in deferment then they are not impacting your credit scores yet and you can probably establish credit with more attractive credit vehicles. If they are in good standing then they're helping your scores because of the payment history and possibly hurting them because of the debt amount.
If you want to give me some more details on your student loans at AskJohn@credit.com I'm happy to help you more.