I haven't looked into the question myself, but admit I misread your comment to mean "barely graduated high school" not "barely [more than] high school graduates

I haven't looked into the question myself, but admit I misread your comment to mean "barely graduated high school" not "barely [more than] high school graduates." I do know that there is no "US police academy" or standardized national training curriculum; it's all at the state level, and within states even municipalites can have their own requirements and standards.