I am scheduled to speak to a local PTO organization next saturday night. PTOs are similar to PTAs--it is just that they are not officially recognized by the national or state PTA organization. PTOs tend to be organized for elementary and middle schools.
I think it is great that parents and their respective PTOs are taking proactive measures at the elementary and middle school level. It shows they are aware that internet safety needs to be addressed at as early an age as possible. As soon as a kid gets online, both they and their parents should be getting into good habits around safe and responsible online activities.
It is good that schools, through their PTOs, are sharing the responsibility to generate safe online experiences.