This was read to me when I was in elementary school (in Ashland, KY if that's relevant) probably around 1987-1990 (it's possible it was a book used in education at the time, or was a Scholastic or Newberry winner, and that's why it was read). The protagonist is a caucasian male, in either the United States or the United Kingdom (I remember the primary language being English, and some of the references making sense for what I was familiar with) who has recently moved onto a rural farm with his family, I think after living in the city. He has difficulty making friends at first, is creeped out by the sounds that the farm house makes at night, and keeps seeing a young boy, who resembles himself, off in the distance (walking on a fence?), who disappears when he tries to catch up to them. He researches the house he's living in, and learns that a boy his age disappeared decades ago. His parents don't believe that there's anything supernatural going on, but he's convinced that the boy dies somewhere on the property, and needs his bones laid to rest.
After that, it gets a bit muddled, all the more so because I was absent one day when they were reading the book (I think at or near the end), and I got a summary of events. I think he finds some bones and buries them (in the middle of a rain storm?) and not long afterwards, he meets up with a boy much like the one he kept seeing in the distance who lives on one of the nearby farms, with an implication that this might have been the boy he kept sighting, not a ghost, but I remember it being ambiguous. Also, there may have been a man with a trained (or at least befriended) corvid, which was also a partial explanation of how things got moved around by the "ghost" (the bird having grabbed shiny objects and moved them other places). Lastly, I have a vague memory of the boy seeing strange shapes in the static of a TV left on at night, although that might be cross-pollination from the Poltergeist films (which I didn't see until much later, but occasionally heard references to).
I suspect it was a short book, less than a hundred pages, since it was being read to us over the course of a few days, a few chapters at a time. I think the title had "Grave" in it, and the cover had a drawn image of a cracked gravestone. Given it was a Catholic elementary school and the teacher was reading it to us, I doubt it was explicitly a horror book, probably more of a ghost story.