Thoughts on Teaching Creationism Alongside Evolution in Science Classes
I think in science classes they should teach the scientific method: collect data through observation, form and test hypotheses via experiments, publish results+methodology so that others can analyze, look for errors, reproduce, & verify.
Schools should teach the scientific method, then apply (or guide the students in properly applying) to both evolution and creationism / intelligent design. The theory of evolution has been undergoing this process for a long time and has been shaped by it. I leave it as an exercise for the reader how creationism fares.