Here are instruments recommended for use with this population:
IDI
The Intercultural Development Inventory (IDI) is a 50-question paper and pencil inventory or assessment tool of statements expressing varied attitudes toward cultural difference (The Intercultural Communication Institute, 2003).
The Measure of Moral Orientation (MMO) is an instrument that measures the ethics of care and justice as typically associated with the work of Lawrence Kohlberg and Carol Gilligan. It is an 89-item self-report inventory that is "designed to assess the moral orientation of college students" (Liddell, Halpin & Halpin, 1992, p. 325).