There are certain forms and surveys that I use to prompt conversations, as well as do managerial things with my students. Why not share them? So feel free to modify and make them your own, just make a copy and you can edit them.
Mature Books Permission Slips for Elementary. I used this to get parent approval for students to read YA in my class.
Classroom Library Letter for Parents. This letter is adapted from letters that Kate Messner and Jillian Heise shared and is a letter I send home at the beginning of the year to explain the variety of books in our classroom letters.
Reader Survey. This survey is for my students at the beginning of the year as I try to learn their reading truths.
Reader Identity Profile. This is a vital part of my recordkeeping and helps me get all information straight that my students give me at the beginning of the year. This is a work in progress.
Pernille Ripp 
Thank you! I came up with virtually the same letter offering 3 levels of access to my “PG-13” books this year, but I like the language of your overall classroom library letter. I’m still fuming that one parent’s complaint got a specific book pulled from our entire middle school last year.
Thank you for sharing these forms. May I adapt your forms to fit my needs? Thanks
Of course