What is the ideal resolution combo for MBP 13" and Projector?

In our school district we are using 13" MacBook Pro's (OS X 10.7 Lion) and external epson projectors, projecting to a Promethean Smart Board. The default resolution for a MBP is 1280X800, that is a no brainer. Now everything I've been reading says that projectors like to be on 1024X768. When we do that the projector resolution dictates that resolution to the MBP screen and the MBP screen is of course distorted. They don't play nice when trying to set independent settings. We've found that 1280X800 for MBP and 1280X960 for the projector works best. When set at these settings and you plug and unplug the VGA adapter the settings on the MBP hold to 1280X800. But we have to keep calibrating the Promethean Smart Board though inbetween plugging and unplugging the VGA adapter's. Any ideas?

Try setting up the projector at 1024x768 as it calls for, but you want to use the best image. This might require a resolution reset as you are dealing with 3 different viewing sources. (ahh, if only they would come up with a standard.
You can try a pram reset with everything up and running, this can sometimes correct distortions.
NVPRAM reset:
Power down the mac, power it back up, before the start up chime, press and hold the following keys:
option,command,P,R,(no commas) and continue to hold these keys till you hear the start chime 2 times. See what you have. You might have to reboot.
Also you can try connecting the projector, fire up the mac then the projector, it might auto-detect. You can try system preferences click detect displays,
As for the smart board, you would have to contact the manufacturer for details.
I know I have not offered much here, but it's worth a try, can't hurt anything.
Also, if you plan to contact the Community in the future, please ammend your profile with the model and OS you are using, as it could help you get more info.
Does your IT person have  stuff locked out? Most school districts have many of the useful tools locked out.
The reason I know this is my wife is a school teacher, and we end up doing most of her multi media stuff on one of our personal computers, because of the lock down imposed on the entire staff.
I hope there is something that might help you here. If not get your IT person to make it happen.(If they can)
Good luck

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