schools a grade of "c" or lower. 58% believe major changes or a complete overhaul is needed. arne duncan weighed in today on andrea mitchell reports. >> somewhere along the line in the country, we lost our way. the teaching profession has been beaten down. sometimes it's been stigmatized. we have to recruit the next generation of extraordinary talent who wants to come in and has the courage to challenge the status quo and give every child in the country a chance for the great education they deserve. >> one of the dynamics to the statistic es we just gave is one of the biggest problems that many students face in the classroom, and sometimes outside from the schoolyard to restroom stalls. in some schools there's little escapes from threatens of violence and drugs. there's ha national survey out of columbia university that shows more than one in four students, age 12 to 17, attend schools which are both gang and drug dominated.