<p>This is perhaps best answered by an Exeter student, but I’ll give it a try anyway . . .</p>
<p>For “guidance or reference,” try a teacher or a fellow student.</p>
<p>If you really want a book so that you can look up the formula you need for solving a problem, then you’ll find Exeter math challenging at first . . . Until you learn how to figure out the formula for yourself. At which point you’ll never need to look it up again.</p>
<p>There’s definitely a period of adjustment. But the end result is probably worth it.</p>
<p>Don’t want to go through that, then don’t go to Exeter. Just about any other school you might be looking at will teach math the “normal” way.</p>