The problem with DST all year is that later in the year the sun comes up fairly late in the day. When I was in high school in the ‘70s, one of President Nixon’s responses to the fuel shortages was to extend DST later in the year. I don’t remember if it was all year, but certainly well into November. I had to catch the bus at 7:10 and the stars were still out. That didn’t bother me, but I would be concerned with smaller children catching the bus or walking to school when it is still night. I don’t know if that would be true too if we had standard time all year, since I don’t have any experience with that.
It seems to me that the stars being out as kids waited for buses is a problem either way. I’ve watched for it, especially when my kids were that young.