Did grammar when I was at primary school and even more at high school with foreign languages, but had to learn some terms e.g. determiner in order to teach them. There was a big government thing saying that making children correct spellings or worry about punctuation stunted their creativity. If spelling those words correctly wasn't the Aim, Learning Objective, Learning Outcome etc. of the lesson, we shouldn't make the child correct it. ( Lots of us did anyway, but it had to be out of sight of those in charge.) Teachers had to stand by and watch children repeat mistakes until they were ingrained because new rules and strategies brought in wishy washy ideas. The reason for all the new terminology comes under management of change. When you get a new role, if nothing looks different then you aren't doing a good job. Grrr