Final answer:
There is no clear information in the provided references to identify a Jewish American designer whose work at Central Saint Martins was displayed at the Victoria and Albert Museum. Significant figures such as Yaacov Agam and Leo Castelli are mentioned, yet they do not match the exact criteria outlined in the question.
Step-by-step explanation:
The Jewish American designer mentioned in the question is not made explicit through the reference texts provided; however, one significant Jewish artist whose work has been displayed in prominent museums, but not explicitly connected to Central Saint Martins or the Victoria and Albert Museum in the references, is Yaacov Agam. However, it doesn't appear that Agam's work was displayed at Central Saint Martins or was showcased at the Victoria and Albert Museum as per the references. Another person of interest is Leo Castelli, an influential art dealer who escaped Europe during World War II and became a notable figure in New York's art scene, although he was not a designer and his connection to Central Saint Martins and the Victoria and Albert Museum is not indicated in the references provided.
It's possible the student might be referring to Myer Myers, a noted Jewish silversmith whose work has historical significance and may have been exhibited or discussed in relation to museum collections, but again, he is not associated with Central Saint Martins or the Victoria and Albert Museum in the provided references.