Great that you won, such a relief isn't it.
I won ours too.
But I think there are huge variations in what Panels accept as evidence from area to area, and even school to school.
I had a letter from current school saying they believed X school was better for our child due to X reasons.
I had a diagnosis of anxiety & OCD from our GP, but they didn't say which school would be best as they've only just become involved. They stated 'mum believes X school is better suited,' which doesn't bear much weight.
I had a letter from CAMHS saying my DS needed a graduated plan and enhanced transition to secondary school, and they believe he's autistic, but due to the long wait times, he has no formal diagnosis.
So I didn't have as much evidence as I would have liked, and I was certainly worried I just didn't have enough.
But the lovely Panel really listened to me, took on board the fact we needed to get DS away from chronic bullying, and that CAMHS believe he's on the spectrum.
I felt they tried to enhance my case rather than pick holes in it.
It was enough, and we won.
There were over 20 appellants, so this concerned me.
I think it depends on a whole host of reasons, some being -
Area
Popularity of the school
The strength oh the school's case
The strength of the appellant's case
And the panel themselves
So I wouldn't say you need X, Y, & Z to definitely win, because we certainly didn't have as much as it looks like we would have needed for your appeal.
I know it is hard to get in on social or medical alone, but combine them and it strengths the case.
And as long as you can absolutely prove that to not give a place to your DC, it would disadvantage them more than it would the school by allowing in one more child, toy stand a very good chance.