Yeah right...Ethics and doing the right thing for the student...Be honest - you're there to get time in your logbooks. Thats not going to happen if you're honest with the students.
Many times FBO CFIs keep these students around so they can all share in the time building. To a FBO CFI a student is nothing more / less than time in the logbook.
Its best to avoid the FBO CFI scene and go to a dedicated flight training program.
-LAFF