When school district officials literally laughed at the notion that the Me Generation — this was the label for my generation — would jump at the chance to teach in urban and rural communities, their concerns, too, went unheard. My very greatest asset was that I simply did not understand what was impossible.

Standardised tests cannot capture all, but on the other hand, students who are not capable of doing well on standardised tests are not well-equipped to thrive in today's world and so it's important for teachers to ensure that students gain the foundation necessary to meet the baseline educational standards these tests represent.

I often hear from new graduates that it's better to wait until you have more experience.... But I'm a big believer in the power of inexperience.... The world needs you before you stop asking naive questions and while you have the time to understand the true nature of the complex problems we face and take them on.

The evidence would suggest that there are some great alternative certification programmes and some lousy ones. There are some wonderful traditional education schools, and some that aren't so effective. What's important is less the pathway than the impact on students.

Education is the most powerful tool countries have for boosting economic growth, increasing prosperity and forging more just, peaceful and equitable societies. Where educational deprivation exists, it breeds conflict and enables repression.

When school district officials literally laughed at the notion that the Me Generation — this was the label for my generation — would jump at the chance to teach in urban and rural communities, their concerns, too, went unheard. My very greatest asset was that I simply did not understand what was impossible.

The most successful teachers in low-income communities operate like successful leaders. They establish a vision of where their students will be performing at the end of the year that many believe to be unrealistic. They invest their students in working harder than they ever have to reach that vision, maximise their classroom time in a goal-oriented manner through purposeful planning and effective execution, reflect constantly on their progress to improve their performance over time, and do whatever it takes to overcome the many challenges they face.