I think that it is common in some parts of the world (Parts of the middle east for example) for people to disagree with the idea of boys and girls receiving the same education. Though in the western world I think it is very uncommon.
single sex education use to be common in the united states but by the end of the 19th century the approach have all but disappear at public schools now some district are experimenting with dividing students by gender against as a way to improve academic performance
