I have already posted this message once, but I received no replies.
Please, someone respond. I need some advice to help this student!

I teach fifth grade. I have a student who I believe may have
selective mutism. I have been looking at MANY websites and
journals, and many of the symptoms fit with this student. There is
only one thing that does not fit...most of the information I have
found say that selectively mute children do not speak to ANYONE at
school. My student will speak with his peers in an (almost) normal
fashion. His biggest problem is that he does not speak to his
teachers, makes limited eye contact with us (though this has
improved since the beginning of the year), and does not exhibit much
emotion at all. He often sits awkwardly in his chair (bent at the
waist with head between knees, or curled with knees to chin), and he
often has his fingers in his mouth (we have addressed this and it
has improved). He does not often follow along with the work we are
doing in class, and he very seldom completes homework. I have
worked one-on-one with him, and I know that he is very intelligent,
so I would hate to see him fail. On the other hand, if he does
pass, I would hate to see future teachers feel the frustration and
concern I have felt this year.

Does this sound like selective mutism to you? If so, are there any
strategies you can suggest that might help me?