Notices of the meetings of the Governing Board of Directors will be posted electronically on this website at least 72 hours prior to the meeting. Education Service Center, Region 20 assists School Districts and Charters in improving student performance and increasing the effectiveness of schools.San Antonio and South San Antonio ISD. The commission meetings are open to the public. Members of the public can attend the commission meetings and comment on items on the agenda. This guide explains each step in the special education process. In each step, learn what happens, who is involved, and the timelines associated. Notice of Meeting. 2. South San Antonio Independent School District. Special Education Department.