I'm a little younger than the OP, yet we were still taught proper grammar and spelling whilst at school. Although that's not to say I'd claim my grammar was perfect, and I do make mistakes. (Before anyone finds one in this post.)
I do however wonder how English is taught in the modern education system, as I frequently feel compelled to correct my Daughters. It could be argued correct English is almost their second language, yet they all achieved good GCSE grades in both language and literature.