I definitely want to continue my education after my undergrad (likely social work), but I'm wondering how difficult it is to get into those schools when you're not an outstanding student. My marks tend to fluctuate between high 70s to mid 80s, but I assume upper year classes are going to be much harder. How do "average" people like myself fare in getting into social science related graduate programs?

Upper year classes are harder, but your study skills will grow and develop. A lot of us do much better now than we did in first year!

I can't speak to social work grad programs, but most programs I've looked at for myself require around a B+ or A- to be considered. Most only look at your last two years.

If your running mostly A's in social science you are far from average. A averages are rare in social sciences and when I was in first year I think averages were closer to 65 than 80. Your ahead of the curve you just need to work on staying there. Like Kudos said, the work gets harder and there is more of it but you become a better student too.

Gain experience in your relevant field! Easier said than done, I know, but try your best to get either a work position or a volunteer position. Not only do you gain experience and make new contacts, but you'll also have the opportunity to get a great reference letter.

Your marks are really good! If you continue to work hard, don't worry. Fourth year classes may seem daunting now, but as the above person mentioned you will acquire many critical thinking skills as well as study skills by the time you reach fourth year. Keep working hard, and if you really want it, you'll get it

I suppose the average person can, but there has to be something special about you so you stand out from the rest, whether it's amazing reference letters or plenty of volunteer work in your area of interest, etc.

I'm looking at grad programs now and it's frightening! Most do look for an A- average, or a B+, at least. They look mostly at your last two years (so if you are applying in 4th year, theyll consider your 3rd and 2nd year marks). Just keep doing what you're doing and you'll be fine.

*Tip: get to know your profs. If there is a prof you like, talk to them, be friends with them, keep in contact over the years, especially if you'll have them for more than one course. It makes it much easier being able to find someone to write you a strong reference . Also, do some volunteer work now, don't leave it for your last year of undergrad!