Yeah, it’s the classic new punk trying to make a name for themselves by invoking irrelevant and pedantic shite rather than cracking on and learning the ropes.
As before, petty crap like this just diverts people away from what they should be doing and ties them up in unnecessary bureaucratic knots. The tax office won’t give a shit. Does anyone really think that a civil service department that has been crucified by the Tories would even entertain trying to value this benefit so it could be taxed? It would cost them more in man hours than they would take – hence the definition of ‘trivial’.
What the OP should do is say to the jobsworth (or even better go over their head to the headmaster) “I agree, every potential benefit in kind received by any member of staff here has to go into a raffle, no exceptions, so every cake baked, every box of chocolates received has to go in. Mr/Mrs/Miss/Ms X clearly has a background in personal taxation, so I recommend they administer it”.
If idiots want to create unnecessary work, they should bear all of the burden. Otherwise they should shut the **** up and get on with the job they are actually paid for – teaching kids, safeguarding kids etc.