OO we like experiments!
Do a sunscoop and test moisture levels, temperatures, etc. on the north VS the south sides.
Do small/short beds VS big/tall beds. Again measure everything.
Do a long bed with different types of
wood in every 10 or twenty feet. That way you could compare, say, cottonwood to pine or spruce.
Do you have any access to lab equipment and students who love to collect data? Keep track of ph, nutrient levels, nitrogen etc., over time.
Keep us updated on how things are going!
Remember, hugels take time to stabilize. How many years will you be there? The info needs to be passed to next years students, so that the info is collected, so monsanto kids have data.