Exploring the US Language Flagship Program Published online by Cambridge University Press: 02 October 2026
Comparison of the Proficiency Scales of the American Council on the Teaching of Foreign Languages and the US Interagency Language Roundtable
Two major scales for measuring functional language abilities are widely used in the United States today. The first is the scale developed by the Interagency Language Roundtable (ILR), an organization of federal US government agencies established to coordinate and share information related to languages (Interagency Language Roundtable, n.d.). Initially based on level descriptions and an oral interview assessment protocol developed in the 1950s by the Foreign Service Institute in the US Department of State, the ILR scale is used primarily by US government agencies to measure the language proficiency of personnel, employment applicants and participants in US government-sponsored programs. The second scale, the ACTFL Proficiency Guidelines (ACTFL, 1982, 1986, 2012; Breiner-Sanders et al., 2000, 2002; Breiner-Sanders et al., 2002), was developed by the American Council on the Teaching of Foreign Languages (ACTFL), based on the ILR scale and adapted for educational contexts. The ACTFL Proficiency Guidelines are frequently used in US educational institutions at the secondary and post-secondary level (See Table A.1 for a comparison of the two scales.)
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