As far as I know, there was a literary magazine out about a month ago that had a scene from the show in it, designed for students. The script is not available officially as of yet. I'm sure, with time, the script will become available. Although, I'm also sure it'll come with an unreasonable price.
I have a copy of the script, however, if you're looking for a specific scene. I know it's illegal to use the entire script in a classroom atmosphere - so therefore I would only be willing to send you a portion of the script. If you're interested, e-mail me at overthemoon@gmail.com.
"The tick BOOM tick BOOM is so loud I can't hear the rain on the grass. I can't hear the wind. I'm about to scream. But I realize I'm not alone."