When my now 36 year old niece was in kindergarten, her teacher replicated this experiment in her classroom. She came off the school bus crying. She or other children had been mistreated by their teacher and other students in her classroom. Her teacher had lied to her and the other children.
How would she ever know if her teacher were lying or telling her the truth in the future? She wouldn't know, it would be impossible.
Her parents decided that very day to home school her and her siblings. They did and she is a well educated successful woman who, I might add, values truth and love above all other things.