WIDA has created a Can Do Descriptor rubric that can help any teacher, language
specialists and otherwise, pinpoint exactly what level their language learning students are operating
in, within
particular communication purpose
domains.
It might be possible to construe depositing the work with the Library of Congress as either a «publication» of the work (which if it happened before 1964 would put it
in the public
domain), or as a relinquishment of the copyright to the public
domain, although I am not a
specialist familiar with the legal effect of different forms of donations to the Library of Congress and it could depend upon the facts and circumstances of that
particular donation to the Library of Congress.