Teaching children in artificially constructed single gender settings is may set them up for dysfunctional behavior when they eventually enter into mixed environments. Minimally, they will face an awkward socialization process as they jump from single gendered school spaces to mixed social situations.
The Bush administration is giving public school districts broad new latitude to expand the number of single-sex classes, and even schools, in what is widely considered the most significant policy change in coeducational education since a landmark federal law barring sex discrimination in education more than 30 years ago.Why are they doing this? Are they trying to skirt another law that they don't like because of their twisted moral value system?
Think about the single gendered organizations that you are familiar with and ask yourself how functional those organizations are? The priesthood, fraternities, sororities, exclusive clubs? Are they healthy for it? Why would you subject your child to an artificially gender separated environment?