Final answer:
Principle 2 of the NEA Code of Ethics emphasizes elevating professional standards in education, ensuring competent professionals enter the field, and enhancing the overall quality and ethics of educational services.
Step-by-step explanation:
According to Principle 2 of the NEA Code of Ethics, the educator shall exert every effort to raise professional standards, to promote a climate that encourages the exercise of professional judgment, to achieve conditions that attract persons worthy of the trust to careers in education, and to assist in preventing the practice of the profession by unqualified persons. This principle is in alignment with Arne Duncan's views on education, as he aimed to raise academic standards and improve the quality of teaching staff by tying teacher evaluation to students' test scores and increasing the number of charter schools for enhanced competition and choice. Moreover, this principle complements the belief underscored across various societal segments that education plays a crucial role in shaping the nation and its citizens, with a focus on continuous improvement in educational services and maintaining ethical standards in the profession.