in reality, just like creationism, evolution opens as to as many questions. unlike gravity which is an apparent and clear thing, maybe the actual mechanics of it is still a theory, evolution is a theory all in all.
A perfect example with people claiming that fossils and it's interpretation is the true savior of evolution. There was a fish that scientists claimed to have gone extinct a few million years ago which is the missing link between the fish and an amphibian, just to find out as recent as 2008 that these fish still exists in rural Indonesia and are fished on a daily bases as part of their diet.
When they researched the fish they realised their whole claim was wrong, so they scrapped it and these links are still none existent.
Point being, Evolution is still a theory and will always be a theory. If you believe creationism shouldn't be taught in schools, neither should evolution!
If either are to be taught, one should be based on a religious aspect of things, the other as nothing more than a theory that can still easily be proved wrong.
Before Athiest get all high and mighty, I've read a fair amount about evolution, and everything is controversial. There is No facts to evolution, they only have semi facts to adaptability, and claim it as part of evolution.
There is nothing wrong with making such researches to find the truth.
In Islam we have the answer, but god asked us to research, to find out why, how and when, there is no harm. Knowledge is power, having the answers isn't always enough, but the way to get the answer makes the difference.
Knowing by heart that 4X4 = 16 isn't much, where is we need to know why does it = 16, and we will need to analyze everything in that simple equation and learn a lot on the way.