An important factor is course rigor, as measured by number of honors/AP/IB/AICE classes + whether you’ve had 3,4,5 years of a foreign language, bio/chem/physics, math through Precalculus/calculus.
So, if your school doesn’t offer APs but is college prep, check out the School Profile to see how it describes rigor and whether it lists the % who get into 4-year colleges.
Probably apply DUS to be safe.