Final answer:
The preamble of the NEA Code of Ethics states: Essential to these goals is the protection of freedom to learn and to teach and the guarantee of equal opportunity for all.
Step-by-step explanation:
"Equal Opportunity" refers to the principle of providing fair and impartial treatment to all individuals, regardless of their characteristics such as race, color, religion, sex, national origin, disability, or other protected attributes. The concept is fundamental in the context of employment, education, housing, and various other areas of public life. The preamble of the NEA Code of Ethics states that essential to the goals of the Code is the protection of freedom to learn and to teach and the guarantee of equal opportunity for all.