Nap Time?

Today, I had a student put his head down on top of his books when I asked the class to open to the story we were reading.  
"Sit up and open your book," I asked politely.
"No," he said casually and shrugged his shoulders.  "I'm not reading today."
"Sit up!  You can't sleep during this class, the ELA exam is in five weeks, and you won't get full credit on the classwork," I warned.
"I don't care," he responded. 


This child will affect my "grade" for the year.  What approach should I take from here?  Let it go?  Send him to the office? Call home? 


What went through my head:


THIS CHILD IS GOING TO AFFECT MY GRADE!!!! Thank God everyone else is reading! 


I can't physically lift the child's head from the desk and MAKE him read. 


The last time I called home for something similar, I got accused by the parent (a parent who didn't even know what grade his child was in) of "picking on" their child, and he called the principal to inform him of this. Clearly, no support at home regarding this child's education.


The principal already knows this child has failed previous years, has been socially promoted, and is completely apathetic.  Clearly, no support there either.


So, I ask you again... what do I do here? Do I let the child sleep and destroy his grade and mine?  


Ahh, but there doesn't seem to be much of a choice for me is there?