At the very least, the students should have been provided with guidelines as to how they should deal with gender and pronouns in their writing. It doesn't sound like this has happened.
I bet it has, every department and field of studies has a manual of style that is the absolute last word on how writing is done in that field. For lots of people in the liberal arts it's the Chicago Manual of Style, but I would imagine that gender studies, being a sub-branch of woman's studies, which came out of English departments in the beginning use the MLA Handbook for Writers of Research Papers (6th ed.) and the MLA Style Manual and Guide to Scholarly Publishing (2nd ed.). Its my understanding, not that I've checked it out very close, that the MLA has gone to great lengths to eliminate all gendering in MLA writing.
gender, human pronouns
NOTE: MLA's Board of Directors approved the following motion at their 1994 post–annual meeting meeting: "MOVED, that the MLA Board of Directors adopt a policy of non-gender-specific language according to CMS14, pages 76–8 (2.98) for all of MLA's documentation, publications, and communications, effective June 1, 1994."
Avoid gender-specific pronouns following nouns that could refer to a member of either sex. Usually this can be done either by changing the pronoun to an article adjective or recasting the sentence to make the pronoun plural.
Rather than:
The librarian should plan his schedule to allow time for writing.
Preferred:
The librarian should plan a schedule that allows time for writing.
The librarian's schedule should allow time for writing.
Librarians should plan their schedules to allow time for writing.
"Everyone," "anyone," "someone," "no one," and other indefinite singular pronouns may be followed by both the masculine and feminine pronouns or the singular masculine pronoun (traditionally inclusive of the feminine). The constructions "he or she" and "his or her" should be used sparingly. Recasting the sentence to the plural is still preferred.