Mine was held on the High School Baseball field. Most I've been too over the years were held on the football fields... a few others were in gyms, one by the school swimming pool.
My grandson just graduated over in England and this is where his was held:
Yes, that's his class. Not a stock photo. It's Ely Cathedral in Ely, UK.
Somebody at that military high school has some pull. - JamesJM