For my older child, a teacher asked her to review it. My daughter had, of course, waived FERPA but the teacher insisted that she read and be comfortable with it before she finalized it.
It was useful for my daughter to have seen it because it was better written and more specific than expected. My daughter knew that it likely should be her first recommendation used.
Along those lines, a guidance counselor IS allowed to read them. If you trust the judgement of your GC and have multiple LORs, the GC could make that choice for you, too.