They were done using the names mentioned to them to fish out some of the students involved in the bullying. The four boys who were bullying Ryan behind Dylan's back had been fished out by now.
They were among the first set of people who were fished out...
There was no way they wouldn't be fished out that fast when it was Dylan who reported to the teachers. It was their names he mentioned to the teachers first because they'd caused a lot of distress to Ryan's life.
Now, after the teachers and the head teacher were done fishing out bullies using the names mentioned to them, there were still some bullies that hadn't been fished out because their names weren't mentioned to the teachers.
..Dylan wasn't aware of them.
And the bullies were happy because they thought they'd be going scot-free. But they didn't know the teachers planned on using a strategy to fish them out.