Going by the tone of the school's letter I will make a prediction about their view on your letter
As @BuckFelize observed
'Mr Dingerr spelled 'alter' wrong. Therefore he is a typical, ignorant white man and unworthy of being taken seriously.'
I think they'd be surprised if you didn't have a white van.
@Ortholith What's your take on it? - the school letter, not the speelong mishtake.