I recall a peculiar conversation with another mom years ago when our kids were in 2nd grade or so.  She was adamant that spelling doesn't need to be taught in school because we have spell check.  I barely controlled the eyeroll.  

My son had a teacher one year who tested spelling entirely with multiple choice tests.  Yes.  I complained.  The principal agreed with me, and the teacher was very unhappy, because actually calling out words and having kids spell from inside their brains was too time-consuming for her.  I understand teaching and testing proofreading skills.  but proofreading skills are not the same as spelling skills.  Good spelling skills contribute to better proofreading skills.