Can senioritis actually affect college admissions?

It absolutely can. Just because a student got the “Congratulations!” letter doesn’t mean the job’s done. Colleges expect students to finish strong, and if final grades nosedive, admissions offices can and will take a second look. Yes, they really do send warning letters. In some cases, they’ll even revoke an offer, which is the academic version of having the rug pulled out right before prom. And even if the offer sticks, lower grades might mess with placement, prerequisites, or class standing. Think of senior year as the cool-down round of a workout. You don’t want to pull a muscle right before the victory lap.