but it s like a group of guys standing on the corner and you re walking. if nobody know who you are, i mean, they re going to say something to you. we definitely want to try to protect them from violence. charles anderson, assistant principal at eric s engelwood high school says it s not uncommon for kids to get robbed, jumped or even worse. 49 students were killed in the school year ending in june of 2009. you re almost securing a perimeter a few blocks around this school. yes, we are. it s worth it if we can get a kid to feel comfortable to come to school and then we can help them focus on their education. reporter: principal peggy coralis says it s hard for her teachers to break through that tough exterior that kids have to keep up. drop that wall and not be so tough or onguard in school. we have to break down a lot of that. as difficult as mornings can