Sharing Our Innermost Thoughts

So theres a popular group of our school in my class , and they all just tries hard to know about other people’s life , like who’s their bf/gf, what’s up in there life , they just manage to know from people and then they even tell our CT. So what do y’all think about them? Is it normal to do gossip about your classmates and others and then share in your friends group and even to teachers. Now i am feeling very insecure that they might be doing that about me too!