I'm assuming that neither you nor any of your classmates took this guy up on his offer, if any of them had you would certainly remember, right?
So the upshot here is that you learned how to safely walk from school and survived in perfect health.
There were occasional stories of this kind when I walked to school in Chicago (early '70's). We were told what to be alert for and what to do and not do. I and all my friends survived unscathed to graduation. Worked for me and my kids (now 19 and 30) too.
I"m not willing to take the chance with my kids. Perhaps you are willing to gamble.