That’s how we got this drug resistant TB. It came in with the boat people. I used to be a dental hygienist and I had an epidemiologist for a patient. He used to keep me up dated on what to watch out for.
If there is a case of TB in a school, they will not tell you what class, or age due to student confidentiality. I'm sure that it would be helpful for parents to know where the infection is, since this is spread by coughing.