Right.
This is potentially a very good lead....
I've found one very local to me
Is it maintained by Herts, or is it independent or is it maintained by another LA?
When you go to visit see if you can find out who is funding their kids. If it is Herts LA, then that is a good start.
Then find out as much as you can eg did they get placed there by Herts LA? Did they have to go to a Tribunal (or more than one) and what reports or experts helped them to persuade the panel to place their kids there.
Do they all have Statement/EHCPs or are some of them there via another route?
It may be that portage or nhs has had a hand in getting them a place there.
Once you have a folder full of as much info as you can find out from the school, then you could ask the LA for your school if it seems right for your DC.
If they say 'no' then ask for an EHCP.
You may not have realised, but there is a huge advantage to DS2 to you being on benefits! If the LA refuse to assess DS2 for an EHCP you can appeal and ask for legal aid to pay for the independent reports that will help you to win at appeal.
I must admit my heart sank as I have been hearing such sad stories out of herts on the grapevine, but all were older kids with ASD and verbal,so fingers and toes crossed this will be better.
Good Luck