As a child I didn't see coaches, LEO, nurses, etc. every day. I saw my teacher 5 days a week for 9 months a year and if lucky in summer school. Actually saw them more than parents who worked and spent free time at local bar, so I think teachers are the front line of role models which is why hiring the right one is paramount.
And, yes, do a deep background check on every one of them. I assumed that was already being done.