College Admissions and AP/IB test

I have a quick question about College Application/Admission and with IB and AP test dates. This year I’m a junior taking IB classes. For some of my classes like Physics i’m taking the IB test as a HL next year. Some colleges have a deadline that you submit your application before December (2015) as a Senior. But then what if I’m taking my IB and AP tests during my Senior year in May 2016. How would colleges know about the fact that I took this tests and the scores I if applications are due in 2015? Am I missing a big picture here? Please help

For US colleges, they will not know, and will not care. Scores are used primarily for credit and/or placement, but carry little to no weight in admissions.