idk about best grade, but in my university people performing "significantly over expectation" in the first year got 1000€. i think it was to stop the nerds realising that we were actually way overqualified for the school we were in and transferring out. it was directly wired into our banks though, not cash - honestly i didn't know about it at first and called my bank incase i was being scammed lol. it might have been a STEM only thing?