Hi Mia,
I was a little worried, too, but when we arrived no one said anything. I was very relieved. About half way through the testing our son was "noticed" basically because he was so small and stood out in a room full of adults. Then we got friendly questions about how old he was, etc.
I justified it by telling myself and my husband (who needed a little more convincing) that if we had enrolled him in school he would be skipped to second this year anyway and then he could have tested legally. So, same kid, same age, shouldn't really matter.
