TSGC is currently comprised of 35 affiliate institutions, 3 Space Grant Colleges, 24 other academic affiliates, 3 commercial firms, 3 non-profit organizations, and 2 state agencies. A recent tabulation of data shows that 70% of all undergraduate students who earn degrees in Science, Engineering, and Mathematics in the state of Texas attend a Texas Space Grant institution.
TSGC actively seeks participation of Minority Serving Institutions [MSI] in the Consortium. As a result, 10 of TSGC's 27 academic affiliates are MSIs and in the last five years two additional MSIs have been added to the Consortium. Minority Serving Institutions are integrated into all areas of planning and implementation of the Consortium. MSI representatives serve on all planning committees. Of the three elected Board of Directors positions for academic affiliates one is reserved for a representative from an MSI. MSI representatives are also eligible to be elected to other Board positions. Half of the membership of the Fellowship Selection Panel is from MSI. Half of the members on proposal evaluation panels are from MSI.
TSGC's structure allows its affiliate representatives to participate in the Consortium at levels which are best suited to their interests and the needs of their home institutions. Acceptable activity ranges from involvement in every program that conducted to involvement in only a single program.
TSGC has established policies for both adding and removing affiliate members. Organizations desiring to be considered for membership must submit an application to the director of the Consortium. This application provides a description of the organization, its involvement in space-related activities, and includes a brief statement describing potential contributions the applicant brings to the Consortium. Applications are circulated to the current membership for a comment period before being reviewed by the Board. The applicant is afforded the opportunity to present to the Board, if desired. Membership is awarded upon recommendation of the affiliate representatives and a vote of the Board of Directors.
The Program Office monitors the participation level of each affiliate and proactively encourages more active participation by those that are marginally engaged. If a member institution continues to be marginally active even after the encouragement of the Director and the Program Office a letter is written to the institutional representative informing them that their organization has not met the requirements for continuation of membership and that their organization is subject to being removed from membership in the Consortium. The organization is afforded the opportunity to show cause why they should not be removed from membership in the Consortium. On several occasions, a visit to the affiliate by program office staff has revitalized activities at an affiliate. In the last 5 years 4 institutions have been removed from membership and 5 institutions have been added to the membership.
TSGC holds semi-annual meetings of the Board of Directors and the representatives of the affiliate institutions. Typically one meeting is devoted to Consortium business and the other has a topical space-related science focus. At the business meetings the Consortium reviews program performance, modifies existing programs, and establishes new programs. The TSGC Board of Directors usually meets in conjunction with the TSGC general meetings and additional Board of Directors meetings are held when necessary.
The need to provide continuity of organizational involvement in TSGC during times of transition of affiliate representatives was identified as a potential weakness in its organizational structure. With the approval of the Board and affiliates, TSGC has asked that a second representative be appointed by each of affiliates. This will  give local representatives a backup,  increase TSGC exposure at its affiliates, and  will increase the multidisciplinary span of representatives associated with the Consortium.