If they teach evolution they need to keep the big bang part out. If we evolved from the big bang then why are there still bangs on earth today? If they are going to teach the theory, they at least need to teach that maybe god, or "a god of some type which science can't figure out" made the bangs. I just wish science class was all about what science knows for absolute sure (just the laws not the theories), not what they think they might know but aren't sure.
You are making some fundamental mistakes in your descriptions of science and how it works.
For example, evolution is a biological or life science, and does not deal with cosmology.
But even more fundamental is your use of "theory" and "law" --absolutely incorrect.
Here are some definitions that might help:
Theory: a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena; theories can incorporate facts and laws and tested hypotheses. Theories do not grow up to be laws. Theories explain laws.
Theory: A scientifically testable general principle or body of principles offered to explain observed phenomena. In scientific usage, a theory is distinct from a hypothesis (or conjecture) that is proposed to explain previously observed phenomena. For a hypothesis to rise to the level of theory, it must predict the existence of new phenomena that are subsequently observed. A theory can be overturned if new phenomena are observed that directly contradict the theory. [Source]
When a scientific theory has a long history of being supported by verifiable evidence, it is appropriate to speak about "acceptance" of (not "belief" in) the theory; or we can say that we have "confidence" (not "faith") in the theory. It is the dependence on verifiable data and the capability of testing that distinguish scientific theories from matters of faith.
Law: a generalization that describes recurring facts or events in nature; "the laws of thermodynamics."
Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.