UFT Claims "Overcrowded" Classrooms Are Down In NYC Schools - Is This True?

From the State of Politics "Here and Now" update for the day:

At 1 p.m., an annual UFT survey has found that for the first time in five years the number of overcrowded NYC classrooms has shown a significant decline, UFT President Mike Mulgrew and elected officials will call on the state meet its obligations under the Contract for Excellence, including lowering all city classes to the state average, steps of Tweed Courthouse, 52 Chambers St., Manhattan.

Mulgrew and Company see themselves as co-leaders in the NYCDOE these days, so anything they say about the NYCDOE is suspect.

What experiences are NYC teachers having out there?

Are the number of "overcrowded NYC classrooms" really declining?