Mention government school funding at a gathering and it is likely to generate an interesting and lively discussion. Funding models vary over time, state by state and country by country. Educating your parent (and student) communities to be able to confidently discuss the topic, beyond what they read in the media, can be part of a school marketing role.
In the USA a documentary, “Big Sacrifices, Big Dreams” profiles four American families and is being shown in several schools as a public event. These four families claim their "pursuit of educational opportunity is impeded by so-called Blaine Amendments, which prohibit state money from supporting families sending their children to religiously affiliated schools. There are 38 states with constitutions that contain Blaine Amendments."