I am not terribly familiar with their operation, but I recall a similar
program offered by the Cumberland Science Museum in Nashville, Tennessee.  I
believe thay had elementary school classes stay overnight after an evening
program of some sort.  You might want to contact them.

I'd love to do that at our museum but my staff is absolutely convinced that
ghosts run amok at night in our facility.  One of our buildings is a former
boarding house where a number of relatively bizarre people lived.  It is
great fun from a folkloric perspective....but a little eerie at night when
the building is completely dark.

--spooked in Hutchinson--

aka
Jay Smith
Reno County Museum
Hutchinson, Kansas

_____
The opinions expressed here are my own (discounting the possibility of being
possessed by the Reno County Museum ghost of course) and do not necessarily
reflect those of the folks who authorize my paychecks (unless they are indeed
possessed by said ghost.)
_____