next here on "nightline" -- abc's diane sawyer takes us back inside a school that was once among theost dangerous in this country. how abc news viewers helped one extraordinary student defy the odds. itthe power of nexium 24hr protection from frequent heartburn. all day, and all night. now packed into a pill so small, we call it mini. new clearminis from nexium 24hr. see heartburn differently. ...better than a manual, and my hygienist says it does. but... ...they're not all the same. turns out, they're really... ...different. who knew? i had no idea. so, she said look for... ...one that's shaped like a dental tool with a round... ...brush head. go pro with oral-b. oral-b's rounded brush head surrounds each tooth to... ...gently remove more plaque and... ...oral-b crossaction is clinically proven to... ...remove more plaque than sonicare diamondclean. my mouth feels so clean. i'll only use an oral-b! the #1 brand used by dentists worldwide. oral-b. brush like a pro. boost® high protein it's intelligent nutrition with 15 grams of

diane sawyer keeping her promise to stay on this.strawberry mansion high school, once considered one of the most dangerous schools in the country. there was a student that so many of you reacted to. diane with what's happened since. >> reporter: four years ago, our cameras captured the chaos inside a dangerous school called strawberry mansion. students on a hair trigger. we watched the new principal race in to try to break up the fights. >> each day it gets scarier. >> reporter: her name, linda wayman, and she had set out to change the school. >> the one way to help your family out is to educate yourself, right? >> reporter: and she ended every day with this one thought -- >> and remember, if nobody told you they loved you today, you remember i do. >> reporter: in a major achievement, her first year, wayman helped get 55 of her 92 seniors accepted to college, like this student christine holland, who didn't have money for the deposit. >> if i had the $550 -- >> reporter: so her college dream was dying. the unbreakable principal gave i

diane sawyer followed the story and she is following up. >> we captured a school inside strawberry mansion the principal race to break up the fight. her name, linda she set out to change the school with 94 security cameras and student by student a message of possibility. >> there's one way to help your family out, it's to educate yourself, right? >> and she ended everyday with this one thought. >> remember if nobody told you they loved you today, you remember i do. >> she got 5 of the 92 students accepted to college. like chris teen holland who didn't have the money for the deposit. the unbreakable principal gave into tears. but four years ago, she didn't know that you, our viewers were coming to help her change lives. >> when the phone started ringing, oh, my god, somebody boyds me actually care. >> you sent donations that money set up 13 educational funds, one of the recipient, the sly girl christine holland. four years later, look at her now, she was given a full scholarship by philadelphia university, books and food from your donation. >> i knew i could do it if i was able to to go to

. >> you can rule out some suspects like diane sawyer, a former nixon press aide, now network anchor.ou've built a fairly strong case for the identity of alexander haig. >> do you have any idea who deep throat is? >> deep throat is in my opinion a collection of people. >> how the secret of deep throat lasts for so long and the answer is neither of us told our ex-wives. >> during our filming woodward casually mentioned that the actor hal holbrook's portrayal of deep throat was pretty close to the whole thing. so when i asked him who the man was, he just smiled. >> other guesses over the years -- nixon campaign aide john sears and fbi official mark felt. >> i never leaked any information. i didn't give anybody any documents. and i'm getting pretty fed up with the whole thing. >> mark felt certainly caught some people's attention. he was the number 2 man in the fbi. and he looked the part. >> no. no. i am not deep throat. and the only thing i can say is that i wouldn't be ashamed to be. >> three decades later bob woodward went to visit mark felt. the elderly man was living with his daugh

when i was first interviewed by diane s diane sawyer, she said if i could introduce you to anybody, whoony morrison? after she said what are you doing now? i said i have to fly to somewhere. she said damage, i was going to have you over for a margarita with tony morrison. did you ever do that? >> no. can we please have a margarita. i was an english major. this is what i care about. it was been fun to do it with my sister, and we're excited. next fall it comes out, and it's been therapeutic. it's been -- it's been like therapy for us. we write about things that i didn't even know bothered. >> are you surprised at how surprised people are that you guys are so >> not cool. we're boring. >> but you're fun. >> people come ump and say you'e so normal. >> the great thing about this book is it's the idea of sisters is a broad topic. >> exactly. you? guys are helping. >> i think more than ever people have to have each other's backs. we just do. let's raise each other up. that's what i had in a built-in partner in crime my entire life. >> that sounds so good. >> it'll be gfun. >> i got to do a bu