歩み (あゆみ/ayumi) Progress. Walking.
This is a local one, kind of a cute quirk. In my other schools in other prefectures they called it something different, but here in Yokohama my elementary schools call the mid-year progress reports Ayumi. The grade cards all say “Ayumi” on the front. Simple and sort of positive way to say it, really. The semester grade cards came out in October around here, but I think some districts do quarter or trimester terms. What do they call it in your school?