From translations floating upon the net the plot is thus.
QUOTE(From Fallen @ SRWG-W @ May 13 2009)
I did this for /m/, so i'll post it here.
Base on what I can make out from the scans
- past appearances of invaders from other worlds have changed the rules of warfare
- because of this, it is a period where skillful pilots and super robots can shine
- much importance is given to the training of specialists
- as a result, the "Super Robot Battle" battle simulator was developed.
- Super Robot Gakuen is founded with Super Robot Battle as its main curriculum.
Also it seems that all the robots that appear seem to be past data collected into a database that can be used in the simulator.
I'm guessing its going to be sort of like the academy in Yugioh Gx, not sure what to think of it yet.
Might have some mistranslations though, but you get the gist.
Not really sure what to say, but I'll wait for the PV to come out.
I translated it from
here, It might be have some broken english.. hope anyone can understand a bit.. its hard to translated japanese language

The super robot Great War became the school adventure, and Nintendo DS determined that it was released as appearance, [Super Robot School].
A commander training school [Super Robot School] where it incorporated "Super Robot Battle" of the battle simulator in a curriculum to become the stage of this product. The conventional fight scene is reproduced by "Super Robot battle" for battle simulation of the virtual space, and the battle seems to be performed with two players.
Eiji Komatsu which it is known by his cut of light Novell [the sky of Ilya, the summer of the UFO] to be in charge of a character design. A design in charge of the design of a chief character and the heroine others original character.
[Super Robot school] is in development completed in 90% now. It is going to release it in the autumn of 2009.
It is a game summary [Super Robot school]Producer Takanobu Terada interview
The opportunity of the setup of this product?I think to make [Super Robot] becoming the communication tool with the friend not only I enjoy a game alone, I made the gameplay that arranged a Super Robot gameplay system of
[Super Robot Wars XO] in XBOX.
Do the robots of the original appear in the scenario?It only appear in "Super Robot Wars". I can enjoy it even if I don't know the story of the original and can enjoy it as [Super Robot]. It is really enjoyment to play as a school adventure + battle thing.
The opportunity when you employed Eiji Komatsu as a character design?There was an opportunity to watch an illustration of the connection that Eiji Komatsu drew it and took down [Super Robot], and a pattern seemed to be correct for setting called the school thing.
Messages for the userWhen you play alone, with slapstick school adventure of unprecedented [Super Robot], I want you to enjoy the gameplay when you play with two people. I read the tactics and can enjoy it as a play tool. Because it is content to be able to enjoy even if this product doesn't know the series and a robot work of [Super Robot], I want many people to play it.
"Super Robot battle" appears as a battle simulator letting the data of a unit installed in a machine called "BASE" fight in virtual space. A lot of data of successive super robots are installed in BASE in with a small machine as I occupy ability. The battle is performed with two players, and it is with a form by two bodies pay out a unit each other, and to fight.
Don't know the details yet.. I'll updates later.
This post has been edited by diN@AltGeinst: May 13 2009, 10:12 PM