That sure sounds like a fun school idea. I heard once that people in Israel play DnD with paid DM’s as part of a school club, uh, sign me up!
While there is certainly room for some play aides (though many have been created here), the big challenge here is that electronic aides tend to be too different than the experience of playing the game live, and no more functional than manual calculation or rolling. If people want to play a fully electronically-mediated game, they can play Triple A, or they can play dozens of other types of computer games. But triple A is in my opinion, too chunky and unwieldy to make it engaging to play. Even a much more polished version would need an AI, which have been notoriously bad in strategy games.
In short, people who want to play a live game tend to be attracted to AxA. People who can’t find space or players for a live game have to spend 12 hours at the keyboard playing a 1990 war simulation. To add some electronic aides to the TT wargame sounds fun, but even with a tablet, it would feel very “videogamey”.
I’ve tried to pass a tablet around containing an e version of a game I do not own (Shadows of Waterdeep). I think the game is excellent; it was $7 on the tablet and $60+$60 for the board game. Still, no one wanted to play with the tablet, or use it when there was an app available.