Just two weeks before school was set to let out for summer vacation, the Bayonne school community was consumed by tragedy Wednesday when two teenage brothers drowned in a school swimming pool. Few details of what led to the incident and how it turned fatal have been released, but Bayonne Superintendent John Niesz has already said that the schools will commission an independent investigation. The two teens, thus far only identified as “Mr. Zheng and Mr. Jiang,” were members of the Bayonne High School community. One, 16, was a junior at the high school and his brother, 19, had graduated last yea…