Rajshahi Education Board has seen the highest pass rate this year among all boards -- general, technical and madrasa -- in the Secondary School Certificate (SSC) and equivalent examinations.   According to results published on Sunday, Rajshahi had a success rate of 90.37 percent while the technical board had 72.7 percent, the lowest. Among the general education boards, Sylhet had the lowest pass rate at 78.79 percent.   In Rajshahi, 200,185 students appeared in the examination while 180,902 came out successful.   Besides, in Sylhet, 116,104 students sat for the examinations while 91,480 passed the exams.   UNB Barishal correspondent reports that 112,436 students appeared in this year’s SSC exam and of them, 89,616 passed in the examination with a success rate of 79.7 percent -- up 2 percent from last year.   A total of 4,483 students achieved GPA 5 from Barishal.