Been driving School Buses longer than I'd like to think. School Buses don't ride ANYWHERE as nice as a Georgetown, so count yourselves lucky.
School Buses are a bit longer than Class A motorhomes, but that's not the issue for keeping them centered on the road.
Best tip I can give anyone for centering your rig............look way up the road........as far as you can reasonably see to guide you to where you WANT to be. Looking at points close to the windshield for positioning will have you constantly making mid-course corrections all the time.........very tiring and very jerky.
Look up..........look way way up. It works. And I'll bet my passengers are noisier than yours.
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Ken and Terry
2018 Sunseeker 2430S-CD, nicely modified and carried by a 2017 Ford E450 Sport
Former Georgetown 330TS owner for 10 years with more mods than I can count, pushed by our 2017 GMC Terrain