First of all, let me say this:
"There are more good teaching facilities in the country (or World) than good teachers."
It is really a shame.
A Video camera, a "line drawing" program, a Building with a "garage door<" and you call it a "Golf Academy.
What a joke.
You need to learn to TEACH FIRST!
But I digress, the question was...
What do you need to teach golf?
and what would be nice to have.
Here it is:
You need:
1. A lot of really good turf.
Good range mats aren't ideal, but not bad either.
2. Enough room for Jason Zuback to hit Driver.
A long as you have 250 yards of carry space, it'll do.
3. Good balls.
A must.
That's it.
Period.
Next in importance:
4. A good modern HD camera with a bright screen, like my Panasonic SD5 (about $500)
You can teach without a camera, but the best use is PROOF for the student.
5. The Phones. In other words an "inside" staff who likes you, promotes you, and talks you up to the customers.
Having cashier-types who dislike you, are jealous of the money you make relative to them, having Assistant pros who are trying to sabotage you, Head men who want you to sell Allstate, etc. can make making a living from scratch tough, but not impossible.
6. A good Putting Green
An high-quality artificial surface will do, especially if it is of decent size.
7. A decent Bunker with good sand.
If the sand is good, it could be 5-by-5 and dead flat.
8. Room, and away from others. The more the better.
I have taught a packed-in ranges and ultra busy PGA Tour practice tees, so it can be done in a phone booth if need be, but trust me, privacy and space are WAY underrated.
9. Cover. The larger the better.
Little Garage-style buildings violate #7 somewhat. Folks get claustrophobic.
The sun is brutal though, and a way out of the direct elements will save you lots of lost lessons—and wrinkles.
10. A line-drawing program. I recommend JC Video.
You really don't need it, but everyone has it, so you better be world-class to convince your students that
THEY don't need it.
11. Ultra High Speed Camera. Casio F1 ($900) or FH20 ($550) are it right now.
Of course you don't need this, but you will learn to teach better quicker with it. Give me six-months with mine and I may put it ahead of regular video.
12. TrackMan. ($28,000 plus $300 a month for support)
You can dream a little right?
13. A six degree of movement 3D machine. (at least $20,000)
Not as important as what the club is doing, ala TrackMan, but one day everyone will have one.
14. A workout area, and a good personal trainer.
It will be standard one day at higher-end places.
15. Me.
If you can afford me.