Eh, It's Okay.
My mom got me a John Green box set for my birthday after she saw how much I loved The Fault In Our Stars, and after reading Paper Towns I immediately turned to this. I found it interesting considering the title and the summary, but once I actually started to read it I was disappointed. I dislike the main character (I believe his name was Connor) greatly. I mean seriously, how can you think that a math equation can predict relationships? It can't! I found Connor (or whatever his name was) way too serious and not fun enough to be the main character. I found his best friend and love interest more entertaining and funny than him, to be honest. As for parental concerns, there are sexual references and acts and swearing, but I'm 14 and I had no problem with it. I guess it depends how mature your kid is. Although even if they do read it, I doubt they'll stay awake long enough to get to those parts. Connor is boring. I loved John Green's other book such as Looking For Alaska, Paper Towns, and The Fault In Our Stars, but this was disappointing.