I remember a movie similar to 'to sir, with love' that featured a scene where student were to approach the public to get answers to questions with different approaches and success of the approach compared. I think it was in the seventies.
Any ideas of the movie name?

This movie has similar scenes

A Piece of the Action (1977) (https://www.youtube.com/watch?v=ymco8ikeB5Q) has two similar scenes where student delinquents interact with the public learning different approaches to asking for information and directions. Starring Bill Cosby and Sidney Poitier

I was thinking the same as kouya