Secrecy surrounding NEISD SHAC meetings

Why is the NEISD SHAC having meetings without disclosing the location, day, time, or agenda?

The Texas Education Code requires all Independent School Districts to have a SHAC (School Health Advisory Committee), and mandates that all ISDs Board of Trustees accept recommendations by the SHAC. Why aren’t SHACs subject to the Open Meetings Act, especially since it appears that every recommendation that the NEISD SHAC has recommended to the NEISD Board of Trustees has been approved with a rubber stamp?

Why the secrecy? Should parents be concerned about secret meetings during which decisions are made regarding the sex education their children can/will be subjected to?

The NEISD SHAC has historically been more open and transparent until the SHAC got called on the carpet for exposing middle school students (11-13 year old children) to Condom-based Sex (anal, oral, and vaginal) sex education in March of 2016 and the Board of Trustees approved the new illicit Sex Ed program on May 9, 2016.