A scored role-play. You are the barber. The whole skill is to protect the family's dignity, stop the spread, and clear your station, all at once, without embarrassing a soul.
The setup. Sandra brought her 8-year-old, Eli, in for a back-to-school cut. Partway through, near the nape of his neck, you spot the unmistakable signs: tiny eggs glued to the hair shafts, and a louse. Head lice is incredibly common, especially with kids in school season, and it has nothing to do with being clean.
The next five minutes protect Eli, Sandra, your other clients, and your tools, all together. Each choice scores up to 10 points. Best path is 50.