Just noting in general that there is a trend in rising ranking of more secondary schools with associated primary schools. I have no intention to pinpoint any one or two schools.
Generally, your observation can help us to evaluate the school from a fact base angle.
Just two more points to add:
1. If compare with other schools' data with similar rank in the same district, you can draw better conclusion. E.g. some good students may headhunt by some elite school....It's a positive sign of the value-added of the school, may not a bad thing.....
2. Most good schools have some good students can get into Big 3 local Universities through EAS and they won't complete F7, but it's normal. Also, some students will study overseas and they will leave HK right after F6. Put my son's school as example, 20%+ not complete F7, half EAS (~20 students), half overseas.