GPSS is primarily governed by a Constitution and Bylaws. On certain limited subjects, GPSS is also governed by policy memorandums passed by the Executive Committee.
Constitution
The Constitution establishes the GPSS and sets down high level rules of operation. Amendments to the Constitution require the approval of two-thirds of the Senate.
Bylaws
The Bylaws expound on the Constitution by setting out detailed rules of operation, but is subservient to the Constitution if they are in conflict. Amendments to the Bylaws require the approval of a majority of the Senate.
Memorandums
The Executive Committee has the power to pass policy memorandums on internal GPSS subjects, such as on submission timelines and the functions of ad hoc Committees. Any actions of the Executive Committee are subject to review by the GPSS.