The academy was ... a great way to create underlings. He had done it out of the kindness of his heart in a past life, and now it was loaded with the opportunity to get the best, brightest and youngest from the get go. So, he had taken an interest in Kusagakure's educational system. Call it one of his 'learning curves' - granted, he had only been in two ninja villages but they were remarkably similar. Their content focused on different things though, and for a time Sozin would sit in on those lessons.
At the time it had been as a guise as to better 'evaluate' their system. It had actually been so he could get a foundational knowledge of the village. Still: nobody had been foolish enough to deny the councillor entrance or authority to teach or to offer insight. And true: he did remember much of the way of the ninja. Some of it just couldn't be forgotten, he supposed.
And what else a perfect way then to set in Akui's visions and piousness then through the educational system?
It had posed actually, that it would be much harder than he had intended. The religiously secular land as he had first come to realise was intent on it being free: Sozin had mistakenly mentioned a God once, and found himself in the presence of four more teachers in his next lesson - watching him teach.
It was that same concern that made him pull it back, speak to the brain and reevaluate his approach: it could not be done so easily here. But, with all great things: a rot could cause the church to fall. Not his church, mind: so righteous and true. He understood, therefore, for now while he changed the system - and oh he would: all the attitudes in the world could not stop him, would place his efforts in smaller classrooms. Quietly: slowing down.
And that started with some of his free, stupendous one to one teaching: all the way up to small groups of up to 5 budding Shinobi/Kunoichi.
He waited for it to start.
{Spoiler}Add any jutsu, relevant information here