Things are definitely changing, and districts are also quite different. In our district, only a few years ago there would be few 7th graders taking algebra (probably less than 5%). Right now about 10-15% 7th graders take accelerated algebra. There used to be a few 8th graders who go to HS for math. Now the number of 8th graders taking HS math is large enough that there are HS math classes taught at the middle school. What I heard is that this trend is continuing in the district.