I'm not really a fan of these kind of games, but I'm a Harry Potter fan. I'll probably need to see some live streamings of people playing it to see if it's really worth buying it.
I want to say it's one to one, but in all honesty I'm a bit fuzzy there. I can recommend JoyFreak's sister site AdminIntel - Admin & Webmaster Resource where there are lots for people of varying degrees of expertise with development, you likely can get a far more precise answer there!