I'm a teacher and want to create a music style chart for behaviour in my school. I have 278 pupils in the year ranging from -38 for behaviour points (very naughty) to 14 points( very good)

I want to publish the top 40 each week showing whether students have gone up, down or if they are a new entry.

I know how to rank but the next stage in above me.

if you can help I would appreciate it very much.

JTF