Hmmm, someone else giving advice that they know nothing about. The lad is correct, and much more likely to pass his exams if he listens to his tutor rather than listening to you.
I quote from page 47 of the IEE code of Practise for In-service Inspection and Testing of Electrical Equipment:
15.14 Plug Fuses
The fuse in the plug is not fitted to protect the appliance, although in practise it often does this. In most countries the plug is unfused. If the appliance needs a fuse to comply with it's standard it must be fitted in the appliance. The fuse in the plug protects the flex against faults and can allow the use of a reduced cross-sectional area flexible cable.