what should they be knowledgeable about? What factors contribute to a student’s ability to succeed?

For our discussion, please post a response to the following three questions:

1. If teachers are to increase learning opportunities for all students, of what should they aware, and what should they be knowledgeable about? What factors contribute to a student’s ability to succeed?
2. Of these things, what do you think is most important?
3. Of these things, what have you observed in the classroom?