My personal belief is that private info should be kept private, except on a need to know basis. If someone needs to know something, then it can be told. I don't think you should tell the college people anything except that a relative has Asperger's, and is handling life well. I don't know if people in your father's circle of friends and business connections are aware of his Asperger's, but probably they are not. It would be best not to take the chance on letting the info get out as it could affect their interactions with him, and even affect his job.
Remember, only give out private info on a need to know basis. This is to reduce harm that can be caused by other people knowing stuff about oneself. This applies to all types of personal info--financial, medical, etc.
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If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau