Leaving a high-flying job in consulting, Angela Lee Duckworth took a job teaching math to seventh graders in a New York public school. She quickly realized that IQ wasn't the only thing separating the successful students from those who struggled. Here, she explains her theory of "grit" as a predictor of success.

These questions will help you draw out important information from your kids.

Back-to-school content is usually focused on teachers and students, and as these two groups will have the largest workload ahead of them, that makes sense. But for students, the ultimate support system is not an expert teacher, but an informed and supportive family.