Keep the MacBook cover on the device all the time.
Use a safe protective sleeve to store their devices when travelling to and from school. Try not to put the water bottle, charger and the device in the same bag to prevent damages.
Keep water and food away.
Wash hands before using the devices.
Clean and disinfect Apple products with a 70 percent isopropyl alcohol wipe or Clorox disinfecting wipes. Details can be found here https://support.apple.com/en-us/HT204172.
Carry the devices carefully. Close the MacBook lid when traveling.
Prevent from putting anything in the keyboard when closing the MacBook lid
Refrain from using stickers or camera covers that are more than 0.1mm thick as it may damage the MacBook screen when closing the lid. Details can be found here https://support.apple.com/en-us/HT211148.