joining me today is an education reinventor, sal khan of the khan academy. anks so much for being here. you grew up in louisiana. sal: yes. emily: you weren't wealthy or privileged. you brought school lunches. sal: she raised us as a single mother. she had a bunch of odd jobs from managing a local convenience store to at one point a woman who collected change from the vending machines. emily: you went to public high school. sal: we had folks that were headed to four-year colleges. there were some kids out of juvie. some that were headed to college. emily: what did you want to be when you grew up. sal: in high school, i got enamored with the golden age of physics. this is a science trying to understand the nature of reality, how cool is that? we did not have a computer at home. eventually i got my hands on one of these programmable calculators. i became obsessed with that. with code, you can create reality. that became captivating. emily: you went to m.i.t. sal: my guidance counselor said where are you thinking about applying to? i said m.i.t. and he is like,

sal khan: this will be the best thing out there that happens to be free. richard greggory johnson iii: i think the efforts to overhaul it are moving in the right direction, but not far enough. jessica: but not everyone's convinced that the new sat will be a better sat. richard: i think that people that are still marginalized, students that are still marginalized, come from marginalized communities, still won't be impacted positively by any of the changes that the sat officials are trying to make. female: yup, there you go. female: good job. jessica: whatever the outcome of the new sat, these students in hayward are focusing on conquering this year's sat and pursuing their college goals. mark: really, it's all about endurance for me. female: remember, you can take the sat more than once. most colleges will see the last time you took the sat. jessica: now, something else to know. the college board gives eligible, low, and middle-income students fee waivers for four college applications. that means those students can apply to four colleges for free. the new s

have set up a classroom at the khan academy where you are testing lots of different things. sal: is always been a dream. even before khan academy existed, wouldn't it be fun to and mini dumbledore experiment with these ideas? we should have a small laboratory worry contest the ideas. we can test the ideas around, what could a classroom be? emily: how many kids? my eldest son is one of the guinea pigs. lots of the kids are khan academy employees's kids. there is that, and we just started so there are a handful of families letting us experiment on their children. emily: you think online -- do youwill replace think online education will replace the classroom? ♪ emily: the u.s. spends more than any country in the world on education, $1.33 trillion per year. we are 25th in math, 17th in science. what's wrong? sal: 50 years ago, if you said, give me a list of the 10 most innovative companies in the world, maybe 30% would've been american. if you did that now, 80% would be american. i like to think about, how can we bring that spirit of entrepreneurship, that spirit of failure not bein

tonight, don't miss my, nation with salt con -- with sal khan. >> from our studios in new york city,is "charlie rose." charlie: we begin with the new england patriots. they struck back today in response to the ongoing deflate-gate scandal. the team owner addressed the media in a press conference this morning. >> the decision handed down by the league yesterday is unfathomable to me. i want to apologize to the fans of the new england patriots and tom brady. i was wrong to put my faith in the league. charlie: tom brady expressed disappointment and declared

betty: that was emily chang .peaking with sal khan the full interview is right here on studio 1.0.me, is warren also a feminist icon? why he is secretly funding birth control. ♪ betty: warren buffett has amassed the net worth of $64 million -- $364 million. his latest investment is one you may not have heard of. it is contraceptives. is warren buffett the new feminist icon? karen joins us from seattle. exactly how this is. this is through the susan thompson buffett foundation? karin: exactly. it was a foundation founded by warren's first wife, susan thompson buffet. they started it when they were a young couple and it has grown a lot in the last decade. when susan passed away, the estate went to the foundation and a lot went to the gates foundation. but a sizable lead to the foundation as well. funder ofhe leading reproductive rights work in the u.s., and in particular have in the past six or so years, trying to build the research and policy framework for supporting broader use of the devices. betty: these are intrauterine devices, right? karen: exactly. betty: what has changed thr

is it sal achltasala khan? >> caller: yes.pport the deal because we -- because america's tired of shedding blood to the entire world. >> i think you're having a little problem here with feedback. a reminder to our callers, you need to turn down the tv or radio. we can hear you fine. you're getting a little bit of a delay and that may throw you off. we are getting some facebook comments on the iran nuclear deal. we continue to invite your comments on facebook.com/c-span or on twitter @cspan. looking at a couple of facebook posts, those who oppose this can we send your kids to the war first? meanwhile, david says, no they have yet to answer for taking our people for 444 days and slaughtering 261 marines while they slept. back to your calls. john joins us from redwood city, california. a supporter of the agreement. >> caller: yes, i support this agreement. i kind of snicker at some of these poll politicians who think they can make a better deal. if we don't accept this deal we have no coalition to move forward for a better deal.

sal: my eldest son is one of the guinea pigs. a lot of the kids are khan academy employees kids.a is that, and we just -- started so it is a handful of families. emily: do you think all my education will replace visual education? ♪ emily: the u.s. spends more than any country in the world on education. $1.3 trillion a year. in math, we are 25th 17th in science, 14th and reading. what is wrong? went 50 years ago and to give me a list of the 10 most innovative companies in the would've a been american. if you do that list now, maybe 80% would be american. how can we bring that entrepreneurial ship and that spirit of not being stigmatized to the future? it doesn't mean just a gba, it can be a portfolio of creative works, appear feedback. being a designer is a creative endeavor. show us what you have done. emily: the u.s. is the only developed country with a percentage of top performers and low performers. public schools in san francisco aren't good at all. what is the problem? sal: we're living in a world right now but if we don't fix something, we will have a smaller percentage of

sal and then it grew to a couple, five, and then maybe to eight. and then i know as of a couple of years ago it was 40. how many now are employed by khan academy? >> we're now 80 full-time folks and then we have about another 100 contractors who are helping us write content. and then we have thousands of volunteers who are helping us subtitle videos. >> how many of them are conventional educators or experts in subjects? and how many of them are reformed hedge fund managers like you? [laughter]. >> it's a healthy mix of all of the above. you know, if you look at the people developing our content, i would say it's roughly a third are current teachers and/or graduate student professors. a third are -- i mean, some of our best exercise creators are, there's some stay at home moms who have master's degrees or ph.d.s and now they're able to do this as a part-time basis. >> well, and the kind of people who might have actually homeschool their own kids. >> yes, we have a huge homeschooling. >> so, see, one way that you can think about this and it sounds like it's pejorative, and i don't mean it necessarily to be pejorative, is it's like homeschooling o