http://www.usc.edu/dept/ARR/articulation/index.html indicates that USC has articulation agreements or histories with both community colleges and some four year schools. Santa Monica is one of the community colleges, but neither Loyola Marymount (which is not the same as Marymount California) nor Occidental is in the list of four year schools.
Where there is no articulation agreement or history, you cannot be sure of what courses will be accepted as equivalent until after you actually transfer.