DS is 6.5 (July born) and has always been shy but recently it has become more of a concern. He becomes more or less selectively mute around strangers or relatives he sees infrequently. He is bright but a few months ago he had an assessment at a couple of local independent schools - he did not answer when the teacher asked him questions and wrote a few words when asked to write an essay but did manage a "reading age" of 9 and did well