I believe more like 6th graders, but then, what's the difference nowadays?
I've come to the conclusion that the devolvement of our society is due to a Fedgov experiment gone wrong or an entity from a meteorite (think The Blob) that infected our youth in the 60's. The effect was loss of logic, reason, and commonsense.
The infection caused "FEELINGS" to supersede rational responses within their brain neurons. Those infected eventually took over our colleges and universities and further the infection. The disease/affliction has grown exponentially and has spread into Western Civilization.
The hippies originally succumbed to the Invasion of the Brain Snatchers.
IMO, it was drugs - antidepressants like Prozac and ADD drugs like Ritalin and anti-anxiety drugs like Xanax. These are all chemicals that effect the brain's ability to process emotions, ultimately deadening it. As a result, liberals DON'T feel anything, and so CRAVE feelings. So they are cruel beyond belief because they have no palpable conscience - they literally don't feel bad when they do what they know is wrong.
At the same time, any feeling makes them feel alive, because they feel dead most of the time. So they are crude, rude, violators of everything they touch, because negative emotions are still emotions, and are easy, while positive emotions require self-respect they no longer have now that they live such cruel, sordid, vicious and sadistic lives.
Liberals live in Lord of the Flies, curtesy of drugs that allow them to avoid feeling the results of doing wrong.