Despite stagnating in recent years, the graduation rate at city public high schools edged up to an all-time high this past school year — hitting 66 percent, according to city measures.
The preliminary 2013 graduation rate, which includes students who earned their diplomas after summer school in August, has changed only slightly since 2010 — when it was 65.1 percent.
But it has climbed steadily from 60.7 percent in 2008.
The official graduation rates calculated by the state, which are the ones that matter for accountability purposes, aren’t expected under the normal timeline until well into 2014.
But Mayor Bloomberg said he wanted to release the preliminary figures before he leaves office at the end of the month.
“This is what we’ve all worked for [for] 12 years,” he said at the City College Academy of the Arts in Inwood.
The city’s preliminary college-ready graduation rate also improved slightly — while remaining low — to 31.8 percent in 2013.
That’s up from 28.6 percent in 2012, based on city calculations.
The state puts out lower figures for the city’s graduation rates because it doesn’t include kids who stay in school past June.
The most recent state numbers showed a 2012 graduation rate of 60.4 percent at city public schools and a college-ready rate of 22.2 percent.