Smallville vs Buffy: Sunnydayle High vs Smallville High

Which school / town is the most deadly? Which School has claimed the most lives?

Sunnydale, it got to the point that it was a ghost town because of all the death

Well the Smallville series was a lot more "PG" than Buffy. Realistically, I'd say they're on par, but as HyperViper said, the bodycount was much larger in BTVS

Sunndydale for sure. Very few actual people died in Smallville.