Tobirama wasn't someone who would usually regret his actions, but looking into the current future Sakura is currently living in, he sometimes wonders if he could have done better. He starts to doubt his past decisions—the one he thought was the best for Konoha and he starts to wonders if it was actually the best decision for Konoha. Because when he first brought the idea of an academy for the future generation, his hope was it could cultivate and enhanced the already powerful clan children in Konoha. At that time, other neighbouring villages like Kiri were said to have already started their own ninja academy. Therefore, it was of utmost importance that Konoha started theirs to catch up and have their own soldiers. Thus, his focus had always been on the clan children. Each subject was carefully planned to suit the clan kids without overindulging in sensitive clan matters. But it was with this foresight, he would forget about the other remaining citizens of Konoha—the civilians. His decision to focus on clan children resulted in a rift between the clan children and civilian children. Those with clan teachings would be able to pass their exams easily, while those coming from a civilian background usually would lack behind or find it very difficult to catch up with the rest of their peers. As a result, the passing rate for civilians background children was small. This foresight of his would only prove itself further when the teachers and instructors would usually neglect the training or teachings of children from civilian backgrounds. Because at the end of the day, a civilian parent with no shinobi training could not do as much harm as a clan parent who can bring the council upon you, ruin your career and if that isn't intimidating enough, they could and would break more than a few of your bones in retaliation and you wouldn't even be able to speak up to anyone about it.