Creationist/ID Education should be allowed

What a lot of creationist want changed in public school textbooks will not make the material "dumb down". I am all for learning (truth). The main worry in science class isn't whether or not students learn about if God created them or not. However, a lot of textbooks contain stuff that has been disproven.
One example is Darwin's theory. In The Origin of Species, Darwin said:
"If it could be demonstrated that any complex organ existed which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down."
This is called irreducible complexity. If the evolution process occurred so slow, most creatures wouldn't survive.
What evolved first, the animals eyes to see the prey, teeth to chew the prey, stomach to digest the prey, ect.? and when did the prey evolve? Darwin's theory was inspired before he realized how complex cells are. It is outdated and should not be taught in school.Edited by EraqiDberg, : spelling

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I asked what came first, the eye, teeth or stomach? You said the eye. (I'm just trying to get up to date here on evolution.) Was it a long time before the other parts evolved? How slow was the total process?