Based on the concept, this isn't a bad idea. After all, Smallville was a huge hit for DC, and Marvel characters like Spider-Man and the X-Men have a history of using teen characters to explore hard-hitting teen issues such as what to do when a supervillain steals your girlfriend. So a series focused on a teenage Bruce Wayne, before Batboy became Batman, sounds like it could be a home run.
Or ... maybe not.
While we can ignore the fact that Bruce Wayne was set to attend a regular public high school despite his family's immense wealth (maybe the show takes place just before Wayne Sr. wins the lottery or something), it gets bizarre when you realize Bruce was set to share a class with every character in the franchise, including the entire extensive Batman rogues' gallery.
It's a brave gym coach who runs that detention hall.