An extra + for pity?

Who the hell gives a grade like a B++ ? Shouldn't it either be a B+/A-? As far as I've been in academia (which if you want to get technical is about 13 or so years), there has never been a grade that has existed such as a B++. After busting my ass for my rhetoric design poster, my teacher gave back our assignments and I was honestly hoping for an A-, however i see that she circled my final grade and it read B++. O_o Apparently my teacher adds an extra plus if she noticed that we showed extra effort on our assignment. But seriously lets look at the big picture. I believe that I had a good concept, I re-shot my picture 3x, and most of all my poster actually looked like it would be noticeble. A lot of people in my class (imho) had awesome posters, yet she gave them B's, B-'s, etc while the A- posters looked very bland and sorry to say a tad bit boring. My classmate/co-worker who sits next to me loves to play her designs safe. She keeps things simple in her work and doesn't like to take risks with her designs; she gets A-'s. I on the other hand love to take risks with my designs. I like designs that look somewhat dynamic, post-modern, and have personality to them. Design is all about catching people's eyes. So my point then goes to why my oddball teacher gives the grades like she does?

My teacher is so misleading. She'll boast about our posters and how nice they all look, and what a great job we've done on them (pretty much boosting our self esteem). Then she'll return our projects with a somewhat discouraging grade =( The several or so points that keep me away from attaining an A-/A for my poster is if I fix my gradient and text paragraph. OMG. My gradient doesn't look that bad. I can make it more gradual if thats what she wants (and i will because we are allowed to re-do our posters for a better grade averaged out) but it just goes to show that if I start to do simple boring designs I'll get higher grades. *Inside i'm screaming*