I've noticed that a lot of tag descriptions say questions should be at the graduate level or higher. I've been doing a lot of review lately (I have a bachelor's in math and I'm starting to delve in to computer science and stats), and find myself asking questions well below that level, but no-one seems to mind. Rather, people have been incredibly helpful and seem happy to lend a hand.

So I'm curious what the general consensus is on how welcome less advanced questions are. It seems like no matter how far you go, you still find yourself doubling back and questioning/reinvestigating the fundamentals you've been building on.

-
From the About page: "Mathematics is a question and answer site for people studying math at any level and professionals in related fields." :-) –  cardinal Feb 24 '13 at 18:09
One might go further and say that much of the point of the site is to allow questions below the graduate level to be asked. –  Pete L. Clark Feb 24 '13 at 18:44
+1 for "questioning/reinvestigating the fundamentals" no matter how far you go! –  hardmath Feb 25 '13 at 15:29
I think you may have confused math.stackexchange with mathoverflow. At mathoverflow they basically only want research questions and put an emphasis on questions that might come up in graduate level texts. As others have pointed out, all levels come as acceptable for math.stackexchange. –  Doug Spoonwood Mar 2 '13 at 20:27
I wish physics SE would take a leaf from this book. –  Magpie Mar 6 '13 at 3:09

Yes. The site is for all levels.

Do note that [set-theory] has [elementary-set-theory] and [number-theory] has [elementary-number-theory], both for undergrad level questions.

Of course that some questions in undergrad level might be suitable for the "advanced" tags as well.

-
Good to know, thanks for the answer! –  ivan Feb 24 '13 at 18:56
@ivan Also--Don't be too afraid of mistagging a question--there are plenty of people here with tag edit privileges who will retag the question if you've done something "really wrong." Of course, don't take this as a free pass to not tag or to tag poorly... :) –  apnorton Feb 25 '13 at 13:14

Here is an recent example of an question that may be even below highschool level: How do I rewrite -100+1/2 as the mixed number -99 1/2?

So even (re)investigating the fundementals of mixed numbers is totally accepted ;)

-