New York City set a record in 2011 as 65.5% of its high-school students graduated in four years, Mayor Michael Bloomberg said.
It marked the 10th-straight year of higher graduation rates and a 19-point increase since 2005, the mayor said in a statement Monday. Schools that have opened since 2006, including those replacing institutions deemed to be failing, had double the rates of the ones they replaced, the mayor said.
The third-term mayor, a political independent, has asked residents to judge his administration on school performance. In 2002, his first year in office, he persuaded the Legislature and former Governor George Pataki to disband the Board of Education and give him control of the largest U.S. education system.
"When our administration began, schools hadn't seen significant increases in their graduation rates in more than a decade," said Mr. Bloomberg, 70. "Through our strategies to improve education, we've steadily improved graduation rates and student achievement."
Next year, city officials plan to open 78 schools, bringing the total opened under Bloomberg to 613, the mayor's office said in a news release.
The system, which includes 1.1 million students and about 75,000 teachers, will cost the city about $19.7 billion to operate in fiscal 2013, about 60% more than it did 10 years ago.