We had similar forms in our local school district. I described my kid's learning style (fast, advanced in x subjects) and also listed some books he was currently reading to give a better idea of what I meant by advanced in reading. I also described that my kid is very quiet and unlikely to show everything he knows, and that he takes a while to warm up and participate in some things.
I did not leave it at this form though. I contacted the principal directly and described the unusual learning needs of my kiddo and asked for advice on placement. I believe this worked because I also provided evidence -- I had a psychologist's report describing how unusual his learning needs were. My DS got place with great flexible teachers who were good at differentiation, in two different local schools. (Now it's a moot point since the program my DS is in has only one teacher per grade.)
I think that if you're in a district that "gets" your kid, the form won't matter because they will likely know where to place your kid. If you are in a district that doesn't "get" your kid, the form likely won't matter because they will place your kid wherever they feel like it.
