I've never read a script before, and I can't say I'd like to read one ever again. It's awkward to read, because it was never meant to be a book. 
 I liked the story, but because of its format, it was too fast paced and lacked the detail and the emotions of the original book series. Oddly, it felt like I was reading fanfiction, until two thirds in. where it stopped being predictable and a plot twist turned this into the kind of Harry Potter story I'd hoped for. I just wish this story had been written as an actual novel instead. 
 This quote is what earned it a third star though: 
 DUMBLEDORE: Harry, there is never a perfect answer in this messy, emotional world. Perfection is beyond the reach of humankind, beyond the reach of magic. In every shining moment of happiness is that drop of poison: the knowledge that pain will come again. Be honest to those you love, show your pain. To suffer is as human as to breathe.