This report examines the effectiveness of Texas' Centers for Professional Development of Teachers (CPDTs) in addressing diversity as part of educational excellence. The state board of education's five proficiencies for teachers provide the framework within which the report describes program characteristics. For each proficiency, the report examines progress by the CPDTs in addressing diversity, offering case examples. Proficiency 1, learner-centered knowledge, involves developing culturally responsive content, understanding culturally responsive pedagogy, and developing culturally responsive skills in technology. Proficiency 2, learner-centered instruction, involves planning and implementing culturally responsive instruction and assessing learning in culturally responsive classrooms. Proficiency 3, equity in excellence for all learners, requires the teacher to respond appropriately to diverse groups of learners. Proficiency 4, learner-centered communication, has teachers serve as advocates for all learners and demonstrate ethical and professional communication skills. Proficiency 5, learner-centered professional development, involves teachers demonstrating a commitment to learn, to improve the profession, and to maintain professional ethics and personal integrity. The five proficiencies for learner-centered schools promote the concept of learning as a lifelong process for teachers and students. (Contains 32 references.) (SM)