Skyrocketing Discover rates

<p>I posted this over in Financial Aid, but I don't want to miss the wisdom of my fellow parents as well. I'm not generally a forum-spammer, so please forgive me this time. We thought this would be settled by now. Here's my other post verbatim:</p>

<p>Last year D got a private loan through Discover, with DH as co-signer. We got an excellent rate, 4.25% based on DH's great credit. </p>

<p>This semester, they are offering us 9.5%. :eek: They stated that this is based on his credit report from Transunion. So we pulled the Transunion credit report and score, and as we expected, found them to be in wonderful shape. No adverse accounts on the report and a score of 776. We are at a complete loss to understand why the rate more than doubled in 18 months when there were no negative credit events. Discover Customer Service refuses to explain.</p>

<p>Has anyone else had this experience with Discover this year? Are there any lenders who are rewarding good credit with good rates?</p>