I have a Level 1 Starly in my Pokemon Storage Box and I don't want him like that all the time, could he be at a high level after I try to beat the Elite Four?
My best guess would be low-to-mid 30's. But it depends on whether it's the rematch Elite Four, or the regular lineup.
Either way, it's fairly easily leveling.
About 25,to 27 thats my bess gess
About Level 35
Ive tried a similar thing with riolu and it got to around 35 do id say 30-40 for sure if you battle all the elite dl4 and the champion !!
Level 20-50 would be my guess.
elite 4 NO#1=20-30
elite 4 rematch=35-43
GEN IV in platinum(starlys most commen game)
so do it at least two times then in no matter what game you probly will get your stararaptorXD