Could they rescind admission?

Hello, I am an admitted senior planning on attending Wash U in the fall. I applied regular decision, and have since caught Senioritis (like most admitted students to some degree, I assume).

Now I am worried, though, that I slacked off too much and am in danger of being put on academic probation or even losing my admission. I have an idea of what my final grades will be, and three of my classes will have significantly lower grades on the final average than on my midyear report.

Here is how my grades have changed.

AP Calc: B --> C
AP Psych: A --> B
AP English Lit: A --> B

All my other classes have stayed the same (in the A-B range).

Should I be worrying? Will I be asked to provide an explanation?

Only 3 classes with one drop seem pretty insignificant to me. I’m extremely confident you’re fine.

You’re 100% fine, don’t worry about it