The Rhode Island Department of Education is releasing the latest graduation rate numbers for high schoolers.  The department says the four-year rate for public school students rose to 84-point-one-percent, a one-point-three-percent increase over 2016 and an eight-percent increase since 2010.  While graduation numbers for black students, students with disabilities and low-income students saw healthy gains, RIDE notes the graduation rate for Hispanic students only increased by a third of a percentage point, and went down one-point-four points for English learners.