In Chapter 9 of Animal Farm what is significant about the young pigs being educated and their being discouraged from playing with the other animals?
The reason that this is significant is because it is just one more piece of proof that shows that the pigs are going to make themselves into this elite group that will be "more equal" than all of the other kinds of animals.
If you remember back to the start of the book, all animals were supposed to be equal. But little by little, the pigs took all kinds of privileges for themselves. Here, they are being taught not to even mingle with the other animals. They are clearly setting themselves apart and are feeling that they are superior to the other animals.