"language proficiencies" is a correct and usable phrase in written English.
It refers to a person's capability in a foreign language. For example, "John has impressive language proficiencies in both French and Spanish."
After all, the bureau's primary goal in asking this question is not to paint a full and complete portrait of the language proficiencies of Americans but rather to track immigrants' integration into mainstream American society and to ascertain what services they need, and in what languages.
The distribution of all respondents by their Japanese and English language proficiencies are shown in Table 3.
However, self-assessments of language proficiencies may often be biased, see for instance Edele et al. (2015).
Using two methods, an instrumental variable approach and "selection-on-observable" approach, both papers find a strong link between parents' and children's language proficiencies.
Since English plays a crucial role in academic success in Korean universities, both Korean and English language proficiencies were examined in this study using the factors mentioned above.
Mara also struggled with identifying her voice when discussing external voices, despite her relatively high English language proficiencies and academic literacy.
All three companies provide assessments of students' foreign language proficiency.
"Because of his foreign language proficiency, he brought social skills.
There is a crucial need for helping students to improve language proficiency.
Points would be awarded for job skills, education and English language proficiency.
Each school must publicly report results "by race, gender, English language proficiency, disability and socioeconomic status".
