Simple continuity is applied with graph theory to generate a student flow model with multiple inputs and outputs. A graph of all semesters or nodes is laid out along with an input block for transfers in and an output block for transfers out. Arcs are connected from the zero node to the graduation node and these are placed in a time-forward position, then transfer flow arcs are placed into and out of each node. The model is solved using matrix mathematics. A college can use this system to generate data about student transfers into and out of the institution over a period of years. (CH)