Re:I'm in that boat (Score 1)

Basically, if you are not considered "Perfect" based on some arbitrary set of standards, then you must be autistic.

No, that's not the how the test you linked works (I can't say anything about the pamphlet you were given, of course).

In the linked test, you are rated on a scale of 1-4 in 15 different areas. A score of 30+ indicates a mild to moderate degree of autistic behaviour.

You are not going to get a score of 30 by having mild symptoms in 1 or 2 (or even 10) areas. You'd need either mild symptoms over a broad range of developmental areas, or a smaller number of more severe symptoms.

Is the test perfect? No. It relies on the judgement of the person doing the evaluation, which can be effected by any number of factors. If you don't feel it's right, get a second opinion. Your local school district (since you're in the US) is required to provide testing.

One thing to consider - regardless of whether or not your son is autistic, it probably indicates that the public school system will not be a good place for him. Of course, this could be said for the vast majority of the population, but is likely to be especially true for those who are labeled because they are not average and the school district does not know any better way to deal with them. This is not a negative reflection on your son, but on the school system.