JACKSONVILLE, Fla. -- Eight Duval County public high schools' grades improved when the newest batch of high school grades were released Friday morning. No high schools in the district received a D or F grade.

Among the school grades were a few standouts. Jill Johnson, spokesperson for Duval Schools, said Ribault High School and A. Philip Randolph Academy earned their first ever "A" grades.

In addition to those improvements, Andrew Jackson High School also rose three letter grades from an "F" to a "B," Johnson said.

Johnson said the high schools saw an increase of 15 percentage points from 2011 to 2012, and 90% of schools improved or maintained their grade.

Seven schools earned an "A" grade including Darnell-Cookman Middle/High School, Douglas Anderson School of the Arts, Paxon School for advanced Studies, Jean Ribault High School, Stanton College Preparatory School, A. Philip Randolph and Frank H. Peterson Academies of Technology.

Johnson said "B" schools include Andrew Jackson, Atlantic Coast, Englewood, Mandarin and Sandalwood high schools.

Duval County Public Schools Superintendent Nikolai Vitti said, "I want to congratulate our high school principals, teachers, support staff, students, parents and partners on their outstanding improvement. I am especially proud of the work at Andrew Jackson and other traditionally lower-performing schools. Our work now rests on sustaining and accelerating the improvement into the future."

Johnson said 86 percent of Duval County public schools have A, B or C grades.

Duval School Board Chair Fel Lee said, "I have personally seen tremendous progress in our high schools over the last two years, and learning today that the numbers parallel what I have seen solidifies the fact that we are moving in the right direction."

Andrew Jackson Principal Iranetta Wright said, "The sacrifice by our teachers has allowed our students to realize their potential and rise to our level of expectation. I am proud of the work of our students and teachers for their success in the face of adversity."

For detailed information on the 2011-2012 high school grades, visit