The term "personalization" can be found in many contexts. Microsoft offers a personalized desktop; Google offers personalized searching; your local car dealer will invite you to personalize your option packages when choosing a car; Good Earth Cafe invites you to personalize your oatmeal. Gone are the days of "one size fits all."
In education, personalizing is about understanding a great many things about individual learners and then teaching accordingly. To do this, everyone has a role and works together.
Students bring their self-knowledge and their experiences; what they know, how they learn, and what they still need/want to learn.
Teachers bring their knowledge of instruction and curriculum as well as their ability to adapt to different learners.
Schools and school staff provide the people, environment, activities, space, guidance, and relationships that support learning.
Family provides emotional support, learning reinforcement, mentoring and caring.