Awwww, see that is not good pet. People can be funny about it. I have met this too, and from mums who did not even have kids sitting the test this year. I do feel some of this could be sour grapes (no disrespect to anyone on the forum intented) on certain peoples parts.
The best thing is it will all die down soon. Your DS will be off and away to Pates and having the time of his life, leaving the negativity well and truely behind. Your child has worked hard. Do not allow kill joys to dampen your happiness. Ignore the 'too far' comments. If you are happy with the travel, so what? As for the 'part of the community' well he will be mixing with kids from everywhere, being a part of the rich tapestry of life and learning. He's not leaving home
You enjoy it darling and do NOT let these, probably well intentioned, individuals get you down, or your son. You are giving him all the options and YOU alone know what is best for him. Of course he will cope, he passed well and is capable of the work.
Relax and take it in your stride. I just smile sweetly and say "oh well, I;m sure we'll manage!"