Looking on the internet deeply has found these results:

in academy is the most popular phrase on the web.

on academy 1698,000 results on the web	in academy 11,350,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Apparently, his squadron was practising on the Academy flight range near Saturn. You're telling me there's no way that gun could possibly be on academy grounds? Lincoln wasn't on academy grounds. There's been an attack on Corbulo Academy, excessive casualties. It was in my last year on the academy. You didn't want to bring the sauna on the academy. In response, police have ordered all weapons on academy grounds to be confiiscated. His original badge will always hang on the academy wall, but... made this one for you.	He's in a military academy in Fort Lauderdale. I flew something similar back in my Academy days. jeon around 1am this morning. You recited poetry in the academy at springtime. See, I've spent my whole life in military academies. There was a big fire at a college prep school Gas explosion in Yonghwa academy in Dae We met back in the fire academy in 1987. It's well covered in Academy training.

on academy

1698,000 results on the web

in academy

11,350,000 results on the web

More popular!

Apparently, his squadron was practising on the Academy flight range near Saturn.
You're telling me there's no way that gun could possibly be on academy grounds?
Lincoln wasn't on academy grounds.
There's been an attack on Corbulo Academy, excessive casualties.
It was in my last year on the academy.
You didn't want to bring the sauna on the academy.
In response, police have ordered all weapons on academy grounds to be confiiscated.
His original badge will always hang on the academy wall, but... made this one for you.

He's in a military academy in Fort Lauderdale.
I flew something similar back in my Academy days.
jeon around 1am this morning.
You recited poetry in the academy at springtime.
See, I've spent my whole life in military academies.
There was a big fire at a college prep school Gas explosion in Yonghwa academy in Dae
We met back in the fire academy in 1987.
It's well covered in Academy training.