Arthur Goldstein teaches ESL at Frances Lewis High School in Queens, New York City.

His school was built to hold 2,400 students. It enrolls nearly 4,700 right now.

“How bad is it? Last week I counted 101 oversized classes. That’s better than the 268 I counted the first day, but hardly ideal. Ideal, and also mandated by union contract, by the way, is zero overcrowded classes. Every single teacher, as well as basic arithmetic, will tell you that the fewer students there are, the more attention individual teachers can give individual students.

“With new students walking in each and every day, and enrolling in the school, I’m not ready to celebrate just yet. The whole process fills me with something not remotely resembling optimism. I’ve counted classes of over 40 students. The city already has the highest class sizes in the state. Thirty-four, becoming the standard rather than the exception these days, is tough. Over 40 borders on impossible for a mere human, and is no help whatsoever for struggling students.”

“We have two rooms that are converted closets. They have no windows. Inside are indoor air conditioners and HEPA filters designed to make them more bearable. In practice, the A/C units are so loud that they preclude instruction. Some teachers turn them off whenever conversation takes place. Via inertia, they tend to remain off all the time. On sweltering days they must border on torture chambers…

“Just before we made our agreement with the city, when we were approaching the enrollment we now have, a reporter asked me what the breaking point was. I told her I didn’t know, but I never wanted to find out. Our agreement with the DOE enabled us to help make the number of students more closely suit the space in our building. A few years ago we had closer to 4,200 students with a goal of 3500.

“I’m a lowly teacher, and I saw this coming. It’s time for the important folks at Tweed to stop twiddling their thumbs and start earning their hefty salaries. Maybe their offices would be better used as classrooms. Or maybe they could rent space for us in one of the Marriotts.

“In fact, I’m told the city has a plan to reduce our enrollment by 100 students a year, beginning next year. That’s fine, but it’s too little too late. I don’t want to begrudge a single student a single place in a single school, but I also don’t want to find out what our breaking point is. I still don’t know what it is, and I still don’t want to know, but it doesn’t feel far off. If the city doesn’t want to know either, they’ll find us alternate space right now. Waiting is the worst idea and not an option.”

This isn’t right.

Charter schools are not crowded.

Why the crowding in public schools?