DETROIT — The attorney for several Oxford High School families who are suing the district for gross negligence in relation to a deadly school shooting in 2021 has asked an Oakland County judge for more time to take depositions from several more people, including the former and current Oxford Community Schools superintendents. The families of Tate Myre, Justin Shilling, Keegan Gregory, Sophia and Grace Kempen and Ashlynne Sutton are suing the district. Tate, 16; Justin, 17; Madisyn Baldwin, 17; and Hana St. Juliana, 14, were shot and killed by then-15-year-old Ethan Crumbley on Nov. 30, 2021. S…