I suggest you look at the website for your states's maple producers association. On there they should have the names of all producers who are members of the association. Also, contact the director or office worker in their main office and explain what you just told us. maybe they can help.
One problem might end up being that you are looking for producers who have 100 taps or less and boil using wood. I fear that those producers, and there are plenty, they however may not feel a need to join an association. If that fails, I suggest you go on Facebook, look up "Back Yard Maple Producers" ,on that site you will likely find a lot of smaller producers, also, maybe you can find other forums that are for mostly smaller producers and try to find producers within a resonable distance from you.
Good luck and happy boiling! You are doing the students a huge favor, especially since they are from so many other countries. Historically only a portion of the U.S. and part of Canada made maple syrup, they were the only ones with the resource and the favorable weather, now a few other places have begun making maple syrup, I recently read that in Japan they now make it using sap from some of their local maples, years ago, I read that china had planted a lot of sugar maples, I never heard if that has started to pan out. Because in general a maple tree is about 40 yrs old when it gets large enough to tap, that artical wasn't quite half that long ago, maybe in another 20-25 years they may also begin maple syrup production.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.