It's easy for other grownups to give up on kids in this

group; after all, it's just a job! My son has tendency to be in this catergory too. I'm worried as well. He likes to act silly and enjoys attracting peers' laughters/attention in this negative way. I have to educate him what kinds of behaviors are really cool and why clowning around is dumb. I'm waiting for him to grow up to be more mature and master some self control.
BTW, don't encourage your kid to stay in recess reading books, eventually, he will lose playmates and hate to go to school. The one who avoids social will become a loner.