While multiple hard inquiries can increase score drops, particularly for those who are new to credit, credit-scoring agencies recognize the importance of rate shopping. As a result, multiple inquiries for student loans that occur with a 14- to 45-day window (depending on the type of credit score) only count as a single inquiry when your score is being calculated.
I know this post is nearly three years old but I was desperately trying to figure out how to raise my credit score a little faster than usual. I would just like to say that everything he posted I tried and it worked for me. I have raised my score 50 points in just one month! I still have a long way to go, but now that I know what to do, I see it only going up from here.
This is easier said than done, but reducing the amount that you owe is going to be a far more satisfying achievement than improving your credit score. The first thing you need to do is stop using your credit cards. Use your credit report to make a list of all of your accounts and then go online or check recent statements to determine how much you owe on each account and what interest rate they are charging you. Come up with a payment plan that puts most of your available budget for debt payments towards the highest interest cards first, while maintaining minimum payments on your other accounts.