1. Determine if you are required to file a tax return. You are required to file a federal income tax return if you are a citizen or resident of the United States or a resident of Puerto Rico. Your marital status, age, filing method, and income all affect whether or not you are required to file taxes.
proficiency testing. proficiency testing. a program in which specimens of quality control material are periodically sent to members of a group of laboratories for analysis, with each laboratory's results compared with those of its peers. See also: proficiency samples.
Language proficiency refers to a personâs ability to use a language for a variety of purposes, including speaking, listening, reading, and writing. Proficiency is commonly measured using guidelines developed by the American Council on the Teaching of Foreign Languages (ACTFL).