Chuck
There was a thread on this topic in the BPL with Scouts Forum https://backpackinglight.com/forums/topic/96341/
Will there be snow to camp in and on? Will there enough be snow to build snow shelters? Is this beginner snow camping?
I can find and post the lists I have used for my Scout snow camping trips if you like. If this is a first time trip in the snow, I would recommend either snow camping in the front country or no more than 1/2 from the cars in case a Scout gets into trouble. ALso highly recommended would be a close by cabin or warming hut a wet Scout could retreat into. I have had Scouts get into snow play and have frozen snow all day under their clothes who do not complain about being cold until 2 hours after sunset. :-))
For a first time, one nighter and because a Scout is Thrifty
insert one summer bag inside another for the sleeping system
Use two summer pads, one inflatable and one closed cell. If you are using a NeoAir, it is often better to put the closed cell on top of the inflatable. But for regular Thermarests work on top of the closed cell
The boots are problematic since they are so expensive Some people have found rented snow mobile boots work. If the Scout has a good “waterproof” backpacking mid height boot, you create poor man’s vabor barrier with vegetable bags from the grocery store or the rain cover bags the morning paper comes with. Top off with gaiters.
For snow travel if any, have all the Scouts and the whole crew use the same method. Do not mix skiers with snow shoers since they travel at different paces and the good skiers will get very impatient.
PM me back if you want the packing list. I have heard good things about the Philmont winter training and many local councils have training on how to plan safe and fun winter trips.
Cheers/Bruce