Totally an illogical step. Its just like treating cancer with Disprin.
First you have the co-ed system of education and then you complain that they are talking with each other. What do you expect? Boys & Girls hanging out together in break time and discussing the Sunnah of the Prophet (p.b.u.h)?
The concepts of our elders are seriously messed up. They should now stop crying like a bashful maiden. What you sow shall you reap.