There is definitely a difference and a positive aspect to the Chief lecturing the kids. You get experience points each time in difference subject(s). That way when your kids are at a workable age, you've got a headstart plus mine have started their preferred job without my help.

I've noticed the kids who benefit from the lecture get a sparkle over their head towards the end of the Chief's lecture.

Just remember, the Chief can't lecture more than once in 24 hrs.

Good luck!