Regarding “senioritis,” in the conditional offers of admission, some grad slippage is OK or allowed. But “significant” grade slippage and that conditional offer of admission could be rescinded.
We have a long runnning thread here on CC asking the question “When Do Colleges Rescind Acceptances?,” which is/was being answered by Sally Rubenstone:
Hopefully, that’s the correct thread, there are plenty of individual threads of students asking about their offers being rescinded over the years.
So, please be careful out there with that “senioritis” phenomenon. I told my kids, “pedal to the metal.” I’m in the camp of “big finish kick” or “finish strong.” Sometimes it’s difficult to gauge how much (or little) to “let off the gas and coast”, continuing in the race metaphor. 