250+ CS
KDA doesn't matter, win/lose doesn't matter, structures destroyed doesn't matter, dragons/barons don't matter.
S grade = creeps slain
Game 1: 
loss, 10/13/7, 240 minions killed, 2 structures = S+
Game 2: 
win, 14/2/6, 74 minions killed, 7 structures = A
Does this make any sense to anybody else?
Mysticman892 votesMany factors go into your grade, and if you do exceptional in one area, it can make up for a weak performance in another area. Having exceptional cs for example can make up for a lackluster kda (although cs and kda aren't the only factors).
Also keep in mind that grades are based on relative performance on a given champion in a particular role, so performance requirements on tryn top are different from performance requirements on tryn mid which are different from diana top and different from diana mid.
Hethalean1 votesYes it does. It means Diana is a lot harder to get an S on because Diana players do on average much better than Tryndamere players. lolskill.net can show you how well you did comparatively to other people playing that champion.
If CS was the factor, supports wouldn't get S ranks. I have gotten 90% of my S ranks on supports.
DartExplosion101 votesyes it does make sense
izzyhigh1 votesSupport does not get graded correctly. I just went 1/0/11 with nami, placed 28 wards and did 100k dmg and 100k healing. how is that an A-?
