About 33% of first-year students fail to enroll their second year.
That is about a third of all first-year students who don't manage to continue their higher education because of something. That number is quite high, and something should be done to prevent it and to allow students to have the education they need.
721-749 is a good credit score. But 721 and up is good
When a bond's rating is upgraded, the bond is considered a safer investment. This will lower the yield on the bond, because the risk premium is lower. The same principle is at work if you apply for loan. You can think of your credit score as your "bond rating". The better your credit score, the more of a safe bet you are to lend money to, and the more likely you are get a lower interest rate. The same is true of bonds. The yield of a bond is inversely related to the perceived risk of the bond not being repaid.