Wow, I think (even though I work in education) If anyone asked me to go write up about the evening, I'd be wanting to know exactly who put this 'extra curricular activity' together and what they're hoping to achieve.
Ok, if they ask you to take a questionnaire home and fill it in afterwards, then ok. I'd be more than happy to do so.
As for the complaint and fewer marks due to handwritten homework - Was it anything to do with ICT? Or anything that should have been done on a computer? If so then the school should have offered him the time during school hours to complete his homework using a school computer.
If not, then they're basically making a rod for their own back. Every child should be able to access the curriculum no matter what. If they knew he didn't have a printer, then why not give him the option to save it to a disc or pen and print it off in school?
What happened to the 'new' idea behind inclusion?
Nope, I'd be booking an appointment to see the head of year to have a nice chat about it and if she gets no joy then she should write to the govenors to complain.