In dream interpretation (depth phycology) each Character (animal, person or even object) in a dream symbolical represents an aspect of the dreamer

In such light the social studies teacher could represent your thinking and feelings about have to be a good citizen as has been thought to you but that you may not as yet made your own – The primary purpose of social studies is to help young people develop the ability to make informed and reasoned decisions for the public good as citizens of a culturally diverse, democratic society in an interdependent world.

A Car is often symbolic of the ideas, hopes, dreams that drives us. How we get to where we want to go. A car can also be symbolic of how we like to be seen moving through the world, sporty, reliable, rich, practical….

In you’re dream the social studies teachings is trying to hurt you by running you over, suggesting a disconnect with what you have learned with how you experience the world or want to.  You escape by running down hill suggesting that this issue won’t be solved by setting lofty goals or reaching some new heights but instead downward into inward self reflection.  You wanted to help others but you can’t help others until you help yourself /know and own your truths which at some level you know.

There is a ‘friendly’ quality of the self that wants to protect you by calling the cops. Cops are often symbolic of the societal rules we live by and enforce. Suggesting an expectation that the societal rules will protect you… yet there may be some conflict between the rules and your ‘Social studies’ expectations.

In the next part of the you’re in your uncle house. A house is often symbolic of the Self as a whole, all the rooms and such represent different qualities or attributes of the dreamer. That the house was not yours points to an issue of the self that you have taken on, Inherited, that you relate to, but may not be yours. When you think about your uncle what are the first things that come to mind? What do you relate suspect does not see you?

Pool is a game of skill and knowing the angles does that remind you of anything?

A gun in a dream can represent as symbol of power, control, aggression and or defence. In the dream, you are being threatened by the killer with the gun suggesting a confrontation. Such confrontations bring about consciousness.   The ego fears death as an end and so often views change as if being killed, hunted by a killer. But death is necessary to life. We must let go of the past, of what’s not working for us so that we might grow and continue becoming. Such letting go is a kind of death.

Its you uncle who is made to get into the truck.… no mention of you being made to get into the truck. In the dream, have you become your uncle at this point?  You are looking to escape but every path so far is a death end.

A Truck is usually used as a work vehicle. Perhaps your tying to work though this issue by “working” your way through it – going up hill – perhaps thinking that if you do what others expected of you, put your noise to the grind stone and bull dog your way though everything will work out) the dream suggesting that this is not the right road to take. “Doing” is not going to help here but ‘being’ might. Taking time to connect to your authentic self and taking ownership of what you believe may be the way. Trust your intuition, learn with an open mind.