Absolutely not. Apart from the verification problem (is it a homework assignment or not?), I think most students with the savvy to come to PerlMonks to try to find the answer to a homework assignment will probably come away with more understanding than they arrived with by virtue of the necessity of having to figure out how to navigate their way around the site.

For many, they'll find the answer to the assignment and be on their way, but hopefully others will pause and maybe even linger.

Fellow monks are quick to spot someone who posts a homework question. Those who do it once may not be prone to do it twice. That, in my opinion, is deterrent enough.