The role of the teacher is one of the most demanding jobs in the market today. Teachers are required to fully understand their subject material, adolescent development, various aspects of technology, and cultural and social issues. In order to ensure that a teacher is qualified and able to meet all of these requirements, a set of guidelines must be in place. I believe this is where the developmental standards and sub-standards come into place. Teachers should be familiar with students of all different abilities, backgrounds, and needs. In addition, they must be able to understand how to best accommodate all of their students, no matter their differences. Teachers who are familiar with the development of adolescents are able to determine why a students behaves in a particular way and is able to determine how to best meet the needs of that student.