the fairfax county police tell usir t investigation is ongoing. >> that's still a question i have. how could that have happened? and it shouldn'tav happened. >> she started writingletters. her letter was published in the "washington post." >> i feel like somethi has to be done. >> so how many of these are in our schools and what are the rules when it comes to who can operate them?we found there are about 500 of these d get is. out of the 2 districts that have these partitions, 17ave no formal written policy stating who is allowed toperate them. >> it is just mind-boggling. you can't imagine. and particularly after this? >> reporter: the fairfax county schools did issue new policies following wesley's death but she says they don't go far enough to protect students. she wants e school district on require training for staff members and would like to see additional devices added to every mechanical wall. >> once activated, it surrounds both sides of the partit >> reporter: this is called safe pass. it will stop a partition from moving i someone o something gets in its path. we were tol