To faculty who are writing a sponsor statement 

There is no fixed length or format for faculty sponsor statements when writing on behalf of a student, who is submitting their work for consideration for an Alumni Writing Award. So, the advice here is contingent on what the sponsor wishes to communicate. Typically, however, a sponsor statement includes information about the student, their work, and the course in which the writing was conceived and written. To detail these, sponsors might include the nature of the course material, the kind of course, the assignment that the writing  responds to (briefly noted); the main claim of the work and the field in which it is done; the importance and/or quality of the work, especially relative to other such work by undergraduate writers, and/or anything specifically distinctive about the work or the student. Most statements that are enthusiastic are about a page – 200-400 words is pretty typical, though some are a bit shorter and some a bit longer. Statements may be typed or hand-written.