By the way you emphasized the word 'theory' is sounds like you think that theories are somewhat less than what should be taught. This shows a lack of understanding of how science works. No problem, this is common among creationists. Let me explain it to you.
Nothing in science is based on proof, or proofs, but on statistical analysis of evidence that provides us with a level of confidence that the theory is valid. So, number one, asking for proof is erroneous. Asking for evidence would be correct.
A theory is made up of a number of hypotheses, from one to however many are developed, that have been tested and found to give a high level of confidence. In other words, a theory has already been tested and verified. As you can see this pretty much is counter to your statement about 'unproven theories'.
Okay, the evidence does not sustain what you folks claim it does. You love to make 'wink and a nod' comments about Christians who accept creation on faith, but then excuse away your belief in things that can't be proven as scientific.
The flimsey evidence that exists to support the theory of evolution (from single cell to man) is just that, flimsey. You can't point to another theory that you will accept, so yours must be the only one.
In the dark ages, it was the Christians who vilified scientific thinkers. Today it's the scientific thinkers turn.