The enviro lobby has recently succeeded in making these synonymous, but in the past they were not. Learn not to litter, to responsibly recycle (like the old newspaper drives), and to clean up the community (volunteering to clean off old river banks, etc.) are certainly a small part of a good curriculuum.
That was my first thought. "Saving the planet" could also mean spreading the Gospel.
My daughter went to Catholic School from kindergarten through twelfth grade and currently attends a very conservative Catholic College. Like society as a whole, the faculty at the Catholic Schools that my daughter attended were made up of conservatives, liberals, populists, centrists, libertarians, and socialists, and she was never brainwashed into socialist/liberal ideology. In my opinion, the most important aspect of any education is learning how to think critically and objectively. Exposure to divergent points of view and differences of opinion are an important part of this process. Send her to the Catholic School, and with good parenting, you really have nothing to fear.