This comparison between teacher in cop will go nowhere. Back in the 1980's it was referred to as comparable worth. I spent a good time of my life writing job positions setting salary for every level in a company, etc. bottom line is the market dictates.
but let's focus in on local police. In lady Lake a few years back they advertised for police and stated the school requirements to be High School but a GED Equivalent would suffice. In other locations college is required.
Now focus on the community is it Chicago or the Friendliest Hometown in Florida. You get the picture. Also consider that duties may different for each locale
another aspect are the benefits. In some, jobs seekers, seek jobs because the benefits are generous and long term employment guarantees that the retiree and spouse will be set for life.
This is not a complete or exhaustive list of things I could cover here such as the job requirement working hours working conditions....there simply is not enough room but to be sure comparing one job from another take more than saying salary plus benefits
Now I am exhausted
