JACKSONVILLE, Fla. -

School grades for nine Duval County high schools rose in 2011, and 16 of 19 schools scored A, B or C grades, according to the grades released Wednesday by the Florida Department of Education.

Frank H. Peterson Academies of Technology rose three letter grades from D to A, and Terry Parker and Robert E. Lee high schools earned their first B grades.

A. Philip Randolph Academy rose two letter grades to a C, and Jean Ribault High School, which has been on the state's intervene list, earned its first C grade.

The other schools with A grades were Paxon School for Advanced Studies and Stanton College Preparatory School. Schools with B grades were Douglas Anderson School of the Arts, Mandarin, Fletcher, Sandalwood and Robert E. Lee high schools.

"I'm proud of the tremendous progress we are seeing in our high schools," said Duval County Public Schools Superintendent Ed Pratt-Dannals. "In addition, decreasing the number of lower performing schools (D or F) from 11 to three shows dramatic positive improvement. We will continue to assess the work being done in our schools to ensure that all of our students are receiving a high quality education."

Atlantic Coast, Englewood, First Coast, Forrest and Wolfson all received C grades. However, because Atlantic Coast is a new school, its grade is misleading, having only factored in FCAT scores.

Ed White and Raines remained D schools. And Andrew Jackson went from a D to an F and was Duval County's only failing school.

Now that all school grades have been released for elementary through high school, 85 percent of Duval County public schools have made excellent, good or satisfactory grades.

In St. Johns County, Nease and Ponte Vedra high schools earned an A grade, while St. Augustine, Pedro Menendez, Bartram Trail and Creekside high schools received B grades.

Clay County had five A schools and two B schools. The A schools were Keystone Heights, Clay, Middleburg, Ridgeview and Fleming Island, and the B schools were Orange Park and Oakleaf.

Baker County High School received an A. In Nassau County, Hilliard Middle Senior and West Nassau County high schools earned A grades. Yulee and Fernandina Beach earned B grades.

In Putnam County, Crescent City and Palatka high schools received B grades, and Interlachen got a D grade.

Florida's high schools increased in the number and percent of schools achieving high marks for the 2010-11 school year. Results show that 78 percent of the state's high schools earned either an A or B grade, an increase from 71 percent last year.

These grades are based on the high school grading formula that was used for the first time in the 2009-10 school year. It includes FCAT scores, graduation rates, the number of students in honors courses, and SAT and ACT scores.

To look at high school grades, go to schoolgrades.fldoe.org.