JKBOSE Class 12th Date sheet Jammu, Leh. J&K Board of School Education Date Sheet for Class 12th Summer Zone Jammu Division including Leh 2020-21. J&K BOSE Date Sheet for Class 12th Summer Zone Jammu Division including Leh 2020-21. JKBOSE Class 12th Details Class 12th Secondary examination Part II  (CLASS 12th) Bi-Annual/Annual Private Session 2020-21 Summer