Many American students enjoy a break from their studies during Spring Break in April. Investors, it seems, decided to take a hiatus from Udemy (UDMY -2.77%) then, too, as they traded out of the stock to leave it with an almost 12% loss in price over the month. Let's explore the reasons why, and whether the decline leaves the education company attractively priced.A new C-suite appointment and analyst downgradeUdemy didn't exactly pull into April on a high note. In mid-March, the company somewhat unexpectedly ...