The back door into grad school is enrolling in 600 level classes as a non degree seeking student and then applying on the basis of your grades in thoes classes. I dont know if this works for med school or law school but it will work for an engineering masters.
And you have to do well at the courses and still meet admissions requirements and they have to accept you. It's not like you can take this path and say "Ha haaaa I fooled you admissions folks." If you're still a sub par candidate they're not going to lower their standards and there's still no guarantee of anything other than you just gave some school money for courses that dont count anywhere.
It is a bit of a gamble but if you want to get into grad school and your undergrad GPA is not all that then you may have to try doing this. Also this is the one case (in my opinion) where the name brand of your undergrad degree can possibly be a get out of jail free card for a not so hot GPA.
In my case I am working on the pre-req's for a EE MS.
I have a degree from a VERY well known engineering school but my GPA was not hot
I am taking cross disipline undergrad classes to get me ready for MS level work in EE and am doing well
Hopefully between my name brand degree, my PE and doing well in my "gap" classes I will be able to get a MS
Of course its not gaurenteed but at the very least it will count toward my continuing education.
The money is all relative, when you are in undergrad living on loans or mom and dad 3 credits of tuition is big money (espcially if you are going to a brand name, out of state school) now that I am making decent money and only taking one class at a time its a write off. Also technically I dont need a second degree to test for a second PE either so worse case I can take enough "gap" classes to be deemed competent in EE to sit for the PE and could do cross disipline work internally in my company (I already have 1 year stamped in cross disipline work), that would be the least ideal way to however. Also having the MS shaves a year off your second PE time requirements.
So if I can do this so can others.
If you went to a no name school it may be tougher to get into grad school but if its what you want to do you have to try right.