So the only problem that you have is actually switch things in the department, changing things, controlling things, putting it maybe under federal supervision, and if you fix the department, you'll fix the problems - with police corruption, with brutality, with evidence tampering, all those things.
The normal curve is a distribution most appropriate to chance and random activity. Education is a purposeful activity and we seek to have students learn what we would teach. Therefore, if we are effective, the distribution of grades will be anything but a normal curve. In fact, a normal curve is evidence of our failure to teach.
Language would have evolved first as an internal object, a kind of "language of thought" (LOT), with externalisation (hence communication) an ancillary process. I can't review here the strong and growing evidence to support this conclusion, but I have elsewhere. There are ample reasons why having a LOT would confer selectional advantage: the person so endowed could plan, interpret, reflect, etc. , in ways denied to others.
Evidence shows that even now, when it is illegal for employers to pocket tips, many still do. Research on workers in three large U. S. cities found that 12 percent of tipped workers had tips stolen by their employers or supervisors. With that much illegal tip theft taking place, it's clear that when employers can legally pocket the tips, many will.