shift in person, and essay questions in general

<p>on my academic essays, it is encouraged to always use "one" instead of he or she when referring to a generic person in writing. (i.e. a hypothetical situation involving someone who doesn't exist.) is this true on the SAT essay as well? </p>

<p>also, is switching from "one" to "they" an ungrammatical change in person? if so, does that mean if you start a sentence with "one" every pronoun after that has to be "one" or "one's"?</p>

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[quote]
also, is switching from "one" to "they" an ungrammatical change in person?

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</p>

<p>On the SAT Writing section's multiple choice questions, yes. On the essay, it doesn't really matter.</p>

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[quote]
if so, does that mean if you start a sentence with "one" every pronoun after that has to be "one" or "one's"?

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</p>

<p>Using "he or she" when referring to "one" is correct as well.</p>