I believe that the main purpose of education is to help all individuals find and develop their talents in a way that will benefit them and those around them. Getting a "good education," therefore simply means that you have gone through a refining process that has helped you to determine where your strengths and weaknesses lie. The challenge then becomes to develop your strengths and work on your weaknesses.
Everyone is capable of learning; therefore, one of the purposes of education is to help students determine their learning style and to address that learning style in the classroom environment. Attention must be given to ALL learning styles if we are to have all students learning.
The teacher's role in the education of individuals is very complex. The teacher is responsible for delivering content in a way that peaks interest and invites learning, and then implementing strategies to help the students apply that knowledge into other applicable areas in their lives.
The teacher is also responsible for providing "authentic assessment" in the classroom in order to ensure the accurate evaluation of all students. Students must be asked to demonstrate what they know in various ways, allowing for all students to be assessed fairly.
Education requires intense work on both sides, the teacher AND the learner. Students must be willing to work, and to risk if they hope to achieve learning. They must develop their metacognitive skills, with guidance from an "explorer teacher" so as to be able to process and apply their learning to real-life situations.