In general, both student and instructor share responsibility to clarify any rules governing a particular course. When in doubt, a student should consult the instructor, teaching assistant, and/or a GRB member before proceeding. As a last resort, one should write a short note to the instructor indicating the problem and what action was taken.
These principles also apply to laboratory course work and research. Falsification or theft of results are serious acts of intellectual dishonesty, as is claiming undue credit for another's work or ideas.
A list of suggestions for instructors may be found in Appendix C. It is worthwhile reading for any Caltech student, as it lists guidelines for both student and teacher to follow when undertaking a course of instruction.