Spacing on essays, additional info, etc.?

<p>Should it only be single spaced? Because for my big essay, it's single spaced, but for everything else (such as additional info/whyd you change schools, etc) I have it 1.5 spaced so it's easier to read. is this ill-advised?</p>

<p>Double spaced? idk honestly have same question…</p>

<p>anyone ?</p>

<p>help preaaase?</p>