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Studies on teachers’ beliefs about vocabulary learning and teaching have focused, so far, on English as a second language (L2), or foreign language (FL), in different contexts but little attention has been given to other L2s and FLs. In this study, 15 Spanish L2 instructors at large universities were interviewed in order to better understand where they stand when it comes to (1) the importance they give to vocabulary, as compared to grammar, in their classes, (2) how they decide which words to teach, and (3) how they assess students’ word knowledge. These interviews were subsequently analysed following Grounded Theory. Most instructors declared favoring grammar over vocabulary in their courses because the former is seen as more challenging and useful than the latter and because institutional practices and materials also present such a preference. When it comes to vocabulary selection, most of them declared feeling insecure in their decisions due to lack of access to useful resources and to vocabulary goals not being stated clearly anywhere in the syllabi. This lack of clarity when it comes to vocabulary learning goals also results in doubts about the usefulness of even evaluating word learning at all and an overreliance on informal assessments.

This study investigated the effectiveness of word-frequency and teacher judgments in determining students’ vocabulary knowledge and compared the predictive powers of both approaches when estimating vocabulary knowledge. Twenty-nine second language (L2) Spanish teachers were asked to predict how likely their students would know words from a 216-word Yes/No test that measures knowledge of the first 3,000 words in Spanish. The accuracy of their responses was compared with the results of 1,075 L2 Spanish students who completed the same test. To examine if the results could generalize to other L2 settings, 394 L2 English students completed a 70-word Yes/No test that measures knowledge of the first 14,000 words in English, and 15 L2 English language instructors attempted to predict which words would or would not be recognized. Results showed that for both language contexts, (1) the median teacher rater could assess students’ vocabulary knowledge with an accuracy roughly comparable to frequency, (2) the combination of teachers’ judgments displayed a stronger relationship with students’ performance on the vocabulary test than frequency, since the average of three or more teachers’ ratings improved upon frequency when examined with 1,000 bootstrapped samples, and (3) using teacher judgments and frequency together did not substantially improve the prediction of students’ vocabulary knowledge.

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The Challenge U.S. university students enroll in 2 years of language courses before advancing to linguistics, literature, and culture courses. However, do students have the basic vocabulary needed to transition to advanced courses? This article answers this question by examining 943 L2 Spanish students' knowledge of high-frequency words at different proficiency levels.