Have an Impact: Write an Editorial.
Editorials in local or regional newspapers--in print or online--can help to sway thinking. They can impact newspaper staff, elected officials seeking to know what their constituents want, peer community members, and anyone else who reads.
Ohio arts leader Dennison Griffith wrote a great one about the need to include the arts in STEM education work (STEM is the wonk's shorthand for Science, Technology, Engineering, and Math). Well done, Dennison! An excerpt:
Without the arts and humanities -- design, cultural anthropology, history and social studies, music, theater, visual art and visual literacy, writing -- we will educate a generation that lacks historical and humanistic context, and the emotive capacity for inspired flashes of intuitive assessment that is the wellspring of innovation.
Eloquently, Griffith argues for the practical inclusion (to provide all those business and science workers with the creativity and innovation necessary to make serious progress), as well as the less tangible ones (humanity, context, history, self-knowledge).
I'd say borrow this guy's work, write your own editorial, and see if you can sway some locals yourself.
Also, you can find great case making data and sample letters/op-eds/etc. in the NASAA Research Based Communications Toolkit. It's a wonderful resource. Kudos to NASAA's staff and the state arts education leaders it serves for putting it together and giving to the world.