See it if you'd like a larger-than-life portrayal of teacher done w/ energy and affection. Many people loved this play (including the Tony committee)
Don't see it if you want a play to enlighten. I found the fondling of boys by the "hero" repugnant...and his unwillingness to want more in life for them.
See it if You like British dramadies.
Don't see it if You can't stand British accented fare.