Do you know what probation is? When someone breaks a law, they might be told by a judge to follow certain rules instead of going to jail. This is called probation.
Now, sometimes a private company called a probation company takes over the job of making sure the person on probation follows the rules. This is called private probation.
It's like having a babysitter, but for adults who broke the law. The private probation company has a list of rules the person on probation has to follow, like not doing drugs or staying away from certain places. The probation company can check on the person and make sure they are following the rules.
But some people don't like private probation because the company can charge the person on probation for their services. This means the person has to pay money to the probation company, which can be hard if they don't have a lot of money to begin with.
Overall, private probation is like having a second set of parents who make sure you follow the rules when you break the law. But some people don't like it because it can be expensive.