From a teacher's point of view - primary: I am required by the school o contact every parent on or around Parents' Evening.
This obviously works best if everyone comes to one of the two pre-arranged dates, which have been in the diary since the end of the last academic year, as I will have made notes, got all their books out, got all the data to hand and generally be in communicate about your child without interruptions' mode - in particular, I will have arranged childcare for my own children in order to be in school until mid-late evening to facilitate the attendance of working parents. head, SENCo etc will also all be on hand should any issue arise that needs further discussion.
I am entirely happy to see individual parents on dates around Parents' Evening, though I dio hate it when that is used to take 40 minutes rather than 10 without good cause.
I am also entirely happy to call you, though of course that is less satisfactory because i can't show you what i mean in your child's books.
I don't appreciate having to call you multiple times or for you to miss multiple appointments 'because my job is busy and you're just a teacher so you finish at 3', nor for you to expect a late evening appointment on a different evening, because late evenings in school require me to make arrangements for my own family that i'm quite willing to make for pre-arranged dates but not at your request. i can. and do, call from home if you can only make late evenings.
I do, slightly, get the hump when parents can't be bothered to spend 10 minutes discussing their child's educational progress, especially since i spend my whole professional life thinking about, and being judged by, that same progress.... I can understand it in parents who have very poor experiences in schools (we used to do parents' evening meetings with Traveller families, for example, in the playground or elsewhere if they were uncomfortable coming into school due to their own traumatic school experiences), or where the parent has SEN or a series of life events which make education low priority. However, a 'no, I'm not interested enough to bother' is something i would silently judge a parent on...