Fewer than three out of four students who enter Rockland District High School as freshmen will graduate in four years.

RDHS continues to have one of the lowest graduation rates in the state, according to the latest state education department report released May 5.

Graduation rates at Georges Valley High School in Thomaston and Medomak Valley High School in Waldoboro were both around the state average while Camden Hills Regional High School had a rate well above the state average.

At RDHS, 72 percent of students who entered the high school as freshmen graduated four years later as part of the class of 2010. This is about the same as the 71 percent graduation rate for the class of 2009.

The rate at RDHS is less than the 83 percent state average. RDHS graduated the 12th fewest percentage of students of the 133 high schools in the state.

RDHS has regularly had one of the lowest graduation rates in Maine.

The formula used by the Maine Department of Education does not count students who took more than four years of high school to graduate or those people who returned to earn a general education diploma.

According to the state, almost half of all the schools still have a graduation rate lower than 83 percent — the rate required to show Adequate Yearly Progress under the federal No Child Left Behind law.

“I believe, and the governor believes, that by setting rigorous standards and allowing students to move through school based on their mastery of skills — not based on arbitrary time lines and seat time — students will be more engaged, their needs will be more clearly met, and more of them will graduate,” stated Maine Education Commissioner Stephen Bowen in a news release.

Last year, the Regional School Unit 13 board invited prior year graduates to attend a meeting and offer their views on what the school district can do to offer a better education to students. RSU 13 Superintendent Judy Lucarelli said only two students attended the meeting and both were students who successfully entered college and there was not much information gathered about the difficulty of students who are not completing high school.

At GVHS, 84 percent of students in the class of 2010 graduated in four years.

Medomak Valley had a graduation rate of 83 percent.

Camden Hills had a graduation rate of 91 percent.

North Haven and Islesboro had 100 percent graduation rates while Vinalhaven’s rate was 82 percent. North Haven and Islesboro both had eight graduates in 2010.

Statewide, rates ranged from 100 percent for the two Penobscot Bay island schools and 98 percent for Yarmouth High School to a low of 66 percent for Fort Fairfield.