The phrase "appropriate level of proficiency" is correct and usable in written English.
It can be used when discussing the required skill or competence needed for a particular task or role.
Example: "To apply for this position, candidates must demonstrate an appropriate level of proficiency in both written and spoken communication."
Alternatives: "suitable degree of skill" or "adequate level of competence".
The band struck up "New York, New York," and a succession of elderly Jewish women made their way to the stage and into the Mayor's arms He glided about with the grace of a former prosecutor, which seemed a precisely appropriate level of proficiency.
The study was conducted in accordance with the STARD principles for diagnostic accuracy studies: all staff were trained in culture and molecular techniques by the authors and product manufacturer, achieved an appropriate level of proficiency and those performing the molecular analyses were blinded to the reference method of culture-based DST using the MGIT 960 and clinical data.
Master the appropriate level of ballet technique.
Therefore, L2 writing instructors should determine the proficiency levels of students before providing them with feedback not only to be able to provide the appropriate level of explicitness of feedback, but also to track development of students across subsequent drafts.
With a multitude of social media channels at your disposal, develop strategies to help you engage with influencers and keep tuned in to opportunities appropriate to your level of proficiency, as well happenings in the arts at large.
This seems appropriate for a test that purports to assess English at a high level of proficiency, whereas a greater emphasis on items of narrow and very narrow scope would be appropriate on tests targeting lower proficiency levels.
Appropriate curricula that ensure sufficient time for hands-on practical training to become competent to the level of proficiency in all the requisite areas, as complications can arise quickly and without warning.
