There can be numerous reasons for what you see as a child's disrespectful behavior and misbehaving. They learn from the world around them.
I know a lot of adults that act like "grown" children and have very disrespectful behaviors... and some of them are parents, grandparents, and even teachers. Many adults can't control their own behaviors, let alone be a role model to children; it runs rampant in our world and is easily accessible to kids.
So, it is an interesting question... who is willing, and I might add, capable, to teach them how to behave? We value teaching kids how to read, how to write, how to do math... do we also value to teach them social emotional skills on how to behave and emotionally regulate, or do we just discipline them? Do most adults even know how to do this?
Sometimes it's a teacher with a child from an abusive home, other times it's a caring parent with a child who is bullied at school... any person in a child's life has the impact to either help or hurt.
