If a country puts its entire focus on making sure that the education system improves, then that's the kind of progress that you can see.

My grandfather was a teacher, my grandmother on my mom's side, four of my aunts, my sister-in-law, my best friend. So I've always, my entire life, been surrounded by teachers, and because of that I've had a tremendous respect for what teachers can do, the power that they can have.

We are in tough economic times right now, and the first thing we have to do is look at how we're spending the dollars that we have, and at what kind of return on investment we're getting. Because I think it will show that spending more money without fixing the fundamental flaws in the system won't produce anything different in terms of results. In DC, we were spending a whole lot of money on things that had no positive impact on students' achievement levels.

Standardized tests are an indicator of the kind of service taxpayers are receiving - and whether schools, educators and policymakers are doing their jobs. In the United States, taxpayers spend almost $600 billion annually on public education, so it's not unreasonable to ask what all that money is producing. In fact, it's irresponsible not to know.

I have an absolutely unshakable faith in kids, grounded in the fact that I worked for three years in one of the worst public schools in Baltimore, with kids most people would write off because of their backgrounds. But, when I set high expectations, at the end of the day, these kids went from scoring at the bottom on standardized tests, to scoring at the top, despite their unfortunate circumstances.

We need to do everything we can to ensure every single child has an effective teacher every day, which means we need to identify who are the most highly effective teachers, and we should recognize and reward them for the incredible professionals that they are.

You may not do well, necessarily, up front, and in order to be the best, you've got to work hard.