I've been reading the thread for the whole time, and was all very unsure about the various merits, possibly mostly because DD is in reception, reading fine, utterly bored by the school scheme books and just whistles through them, but since all the next load of levels are going to be just as boring it's not really anything to change. Five minutes a week and me writing "ready easily...", or a comment on the plot, or just found it boring - which is what DD requested I put.
However with the last book, the teacher - who rarely comments although the TA always adds something - wrote a long surprisingly waffley comment about specific conditions for moving up to the next level. Perhaps DD had asked, 'cos I don't see book levels, or the home books as relevant - not because I don't see reading as important, but simply that I don't see the system of levels and ploughing through things as an achievement, and DD is either the same personality or has learnt it through me anyway. We read lots of stuff for pleasure or knowledge and the school book system is rarely going to provide that.
However, today, DD didn't get her book changed, because I didn't write in the book. I didn't write in the book simply because there was no room, the teachers comment had simply filled the page next to where I could write, and I'm not the sort to start a new page simply to write - "easy, was a bit questioning about bag in ragbag." DD told the TA she'd read the book, so we just got no book, which is fine, we've plenty of stuff to read. But it was quite surprising to see the amount of officialdom put around the journal, rather than DD just swapping out the book.
Even in YR though I'm sure without the teacher naming and shaming, there's a lot of notice by the kids what happens, DD notices the levels of other kids, told me as we walked around the classroom where to check the list of names of kids who were getting extra help with various topics (writing / numbers etc.). There's competition there for sure, so I'll help DD out by putting something in the journal, even though I don't see the point in our case, DD will be a fluent reader before long, I can see how for others it wouldn't be.