People with the VSD colloquially
known as ‘true hermaphroditism’ do not have two sets of genitals. Please don’t spread salacious rumours about a type of extremely uncommon birth defect.
rarediseases.org/rare-diseases/ovotesticular-disorder-of-sex-development/
(if an adult colleague is telling you they have two sets of genitals they are likely a fantasist or they have had a surgery known as ‘phallus preserving vaginoplasty’ probably best not to Google that).
I’m sorry Sendhelpsoon of course your 9 year old isn’t a rapist.
However, it is important that systems exist that minimise the likelihood of that kind of accusation in future (eg your child using separate third spaces to change, if the single sex spaces for males aren’t suitable).
I can totally understand the impulse to send a sparkly, sensitive, feminine gender-y kid to a girls school (hoping it will be safer as no rough boys) but I don’t think it would be safer when you look at the whole picture, eg safer from ostracisation/safer for mental health for both your child and their classmates (who may find it extremely upsetting to have their dignity, privacy and single sex sports compromised) and the problems that could arise if other parents object (parents selecting a single sex school are expecting it to be single sex, so girls who become transboys after admission can stay, but they have to be female to be admitted).
Best of luck, I’m sure it must be very worrying, but hopefully your DC will be able to move up to secondary with existing friends from primary.