Alcohol and Studying (for classes)?

Everyone reacts differently but alcohol's effect on memory is on your short term memory, and not just while you are drinking. If you are drinking at a level where you still remember what you did that night pretty clearly and are in control, then you're memory of what you studied should be fine. If you are drinking to the point of blackout, then it's a different story - most people who blackout have difficulty remembering what they did not only when they were drinking, but earlier in the day when they were sober.