What should be kept in the supply room of a cosmetology school?

The correct choice is cleaning equipment because maintaining hygiene and sanitation is a critical aspect of cosmetology practice. In a cosmetology school, having cleaning equipment readily available in the supply room ensures that students can regularly clean their tools and workstations, adhering to health standards and preventing contamination. This is vital not only for the safety of students but also for instilling good practices that they will carry into their professional careers.

The other options do not align with the primary purpose of a supply room in this context. Personal items of students should be stored securely and privately, and daily lesson plans do not require storage in the supply room as they are typically managed by instructors. Furthermore, client records, which contain sensitive information, need to be kept in a secure area to protect privacy and comply with legal regulations, rather than in a general supply room.