My father sent me a link to a nice article about why we should Call Them Government Schools.
I liked this:
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The term “public” has a positive ring, as in “public service” and “the public good.” Pro bono publico is a lovely idea.
The word “government” lacks this gloss. It rarely gives people a warm and toasty feeling.
Thus, the term “government schools” stops people in their tracks. It reminds them why schools run by politicians frequently fail: They are part of the same state that too often robs us blind, delivers poor services, and founders in corruption.
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So whenever you can please try to use the phrase "Government Schools."