A great number of the parents in my area have begun homeschooling their kids for just this reason - they want to avoid "worldy influence." I think homeschooled kids in my congregation outnumber the ones in public school.
I wouldn't be surprised if homeschooling began to be encouraged by the WTS in the years to come. They'll probably start by mentioning it off-handedly in a convention talk and giving it subtle positive recognition (we all know how the uber-dubs will find every minor detail of a convention and just run with it). Once they see how that goes over they'll throw it into CO talks or KMs and maybe the WT a couple years later. That way if they ever need to make it required, almost all of the JWs will already be doing it, or they'll just say "I thought that's how it always was."