Gagajo, don't feel so bad. When I attended evening classes I loved the red ink. I was fascinated by the corrections. I was told that in the years I attended school there was less emphasis on teaching grammatical rules. My teacher once mentioned that when she moved North she noticed a differing grammatical emphasis in our speech. However I can't recall what it was.
I love regional accents, including my own. I still remember a time on holiday when I first heard a farmer speaking with a rolling type 'r' in Wooler, Northumberland. Absolutely wonderful. It goes hand in hand with the musical culture of the North East. I spent last night listening to traditional folk music on youtube: Katherine Tickell's, Rothbury Hills, Cushie Butterfield (Owen Brannigan), Alan Hull et al. I loved to hear the regional accents on 'Nationwide' many years ago. Today we are rarely treated to these voices on television. Fred Dibnah springs to mind but that's about it.