behind the metrics

IBO: City's school progress reports are flawed but an advance

The system the city uses to award letter grades to schools is complicated and in some ways flawed — but it’s the best system we have.

That’s the conclusion of a report by the Independent Budget Office, the city’s budget watchdog that since 2009 has been charged with scrutinizing Department of Education data. The office examined the city’s progress reports, released annually since 2007, to see whether their underlying metrics produce meaningful results.

The progress reports were meant to radically reorient the way that New Yorkers thought about school performance. Instead of assessing schools simply by the proportion of students passing state tests, the progress reports focus on students’ improvement from year to year. In a precursor to the “value-added” measurements now being used to assess teachers, the reports use a complex and evolving algorithm that controls for student demographics to calculate just how much students have progressed.

The city then assigns each school a letter grade based on its score. The letter grades inform both the city’s decisions about which principals should receive bonuses and which schools should be considered for closure and families’ choices are where to enroll.

The IBO concludes that the progress reports offer a more sophisticated analysis of school performance than ever before — but that there is room for improvement. “The methodology used by the education department is a significant improvement over simply basing measures on comparisons of standardized test scores,” the report concludes. “Still, the School Progress Reports have to be interpreted with caution.”

The IBO looked at three issues: whether the city’s algorithm has successfully controlled for factors outside of schools’ control; whether the reports have reflected long-term shifts as well as short-term changes; and whether minor methodology changes produced outsized score swings.

On the first question, the budget office concluded that overall, progress report scores in a small set of schools, those serving both elementary and middle school students, can be considered “demographically neutral” — or unaffected by student characteristics. But in most cases that was not true, according to the IBO’s analysis.

“All other things equal, elementary, middle, and high schools with a higher percentage of black and Hispanic students were consistently likely to have lower overall scores than other schools,” the report notes. Progress report scores were also lower in high schools with more poor students and more students with disabilities, the IBO concluded.

Confirming previous findings, the IBO also concludes that elementary and middle school scores have been highly volatile, with the majority of those schools receiving three or more different progress report grades since 2007. (High school progress report grades are based on a wider range of variables and have always been more stable.) But the IBO says that changes to the reports’ methodology, particularly around how students’ year-to-year growth is assessed, have made them more stable.

Finally, the IBO’s analysis found that most of the changes made to the progress report methodology in 2010 and 2011 did not affect their overall grade. In general, the office concludes, the city’s reports successfully identified very high- and very low-performing schools under multiple methodologies, but they were less successful at distinguishing among middle performers.

“The distinction between a C and D rating for a school may be the result of the particular methodology that the DOE has chosen, among the many that are possible, rather than the result of school practices or effectiveness,” the report concludes. “Unfortunately, this weakness occurs at precisely the point where high stakes decisions about schools are made.”

Department of Education officials say that while the peer group comparisons do not “completely control” for student characteristics, they do reduce the impact of race and other demographics compared to other measures of school performance. They also point out that the IBO found strong correlations between demographics and school grades in only a handful of the relationships it analyzed. And they note that the IBO’s analysis shows that between half and three quarters of C and D grades issued in 2011 would have been the same using the IBO’s methodology for analyzing score stability.

“As the IBO has recognized, New York City’s progress reports are a huge improvement over other state and district systems for measuring student learning in schools — and for this reason they have become a national model,” said spokesman Matthew Mittenthal in a statement. “Closing the achievement gap in New York City is a core goal of our reform strategy, but as long as it exists we should expect it to show up in school progress reports, which are designed to be an accurate reflection of our schools’ strengths and challenges.”

The complete IBO report is below.

call out

Our readers had a lot to say in 2017. Make your voice heard in 2018.

PHOTO: Chris Hill/Whitney Achievement School
Teacher Carl Schneider walks children home in 2015 as part of the after-school walking program at Whitney Achievement Elementary School in Memphis. This photograph went viral and inspired a First Person reflection from Schneider in 2017.

Last year, some of our most popular pieces came from readers who told their stories in a series that we call First Person.

For instance, Carl Schneider wrote about the 2015 viral photograph that showed him walking his students home from school in a low-income neighborhood of Memphis. His perspective on what got lost in the shuffle continues to draw thousands of readers.

First Person is also a platform to influence policy. Recent high school graduate Anisah Karim described the pressure she felt to apply to 100 colleges in the quest for millions of dollars in scholarships. Because of her piece, the school board in Memphis is reviewing the so-called “million-dollar scholar” culture at some high schools.

Do you have a story to tell or a point to make? In 2018, we want to give an even greater voice to students, parents, teachers, administrators, advocates and others who are trying to improve public education in Tennessee. We’re looking for essays of 500 to 750 words grounded in personal experience.

Whether your piece is finished or you just have an idea to discuss, drop a line to Community Editor Caroline Bauman at

But first, check out these top First Person pieces from Tennesseans in 2017:

My high school told me to apply to 100 colleges — and I almost lost myself in the process

“A counselor never tried to determine what the absolute best school for me would be. I wasted a lot of time, money and resources trying to figure that out. And I almost lost myself in the process.” —Anisah Karim     

Why I’m not anxious about where my kids go to school — but do worry about the segregation that surrounds us

“In fact, it will be a good thing for my boys to learn alongside children who are different from them in many ways — that is one advantage they will have that I did not, attending parochial schools in a lily-white suburb.” —Mary Jo Cramb

I covered Tennessee’s ed beat for Chalkbeat. Here’s what I learned.

“Apathy is often cited as a major problem facing education. That’s not the case in Tennessee.” —Grace Tatter

I went viral for walking my students home from school in Memphis. Here’s what got lost in the shuffle.

“When #blacklivesmatter is a controversial statement; when our black male students have a one in three chance of facing jail time; when kids in Memphis raised in the bottom fifth of the socioeconomic bracket have a 2.6 percent chance of climbing to the top fifth — our walking students home does not fix that, either.” —Carl Schneider

I think traditional public schools are the backbone of democracy. My child attends a charter school. Let’s talk.

“It was a complicated choice to make. The dialogue around school choice in Nashville, though, doesn’t often include much nuance — or many voices of parents like me.” —Aidan Hoyal

I grew up near Charlottesville and got a misleading education about Civil War history. Students deserve better.

“In my classroom discussions, the impetus for the Civil War was resigned to a debate over the balance of power between federal and state governments. Slavery was taught as a footnote to the cause of the war.” —Laura Faith Kebede

Weekend Reads

Need classroom decor inspiration? These educators have got you covered.

This school year, students will spend about 1,000 hours in school —making their classrooms a huge part of their learning experience.

We’re recognizing educators who’ve poured on the pizazz to make students feel welcome. From a 9th-grade “forensics lab” decked out in caution tape to a classroom stage complete with lights to get first graders pumped about public speaking, these crafty teachers have gone above and beyond to create great spaces.

Got a classroom of your own to show off? Know someone that should be on this list? Let us know!

Jaclyn Flores, First Grade Dual Language, Rochester, New York
“Having a classroom that is bright, cheerful, organized and inviting allows my students to feel pride in their classroom as well as feel welcome. My students look forward to standing on the stage to share or sitting on special chairs to dive into their learning. This space is a safe place for my students and we take pride in what it has become.”

Jasmine, Pre-K, Las Vegas, Nevada
“My classroom environment helps my students because providing calming colors and a home-like space makes them feel more comfortable in the classroom and ready to learn as first-time students!”


Oneika Osborne, 10th Grade Reading, Miami Southridge Senior High School, Miami, Florida
“My classroom environment invites all of my students to constantly be in a state of celebration and self-empowerment at all points of the learning process. With inspirational quotes, culturally relevant images, and an explosion of color, my classroom sets the tone for the day every single day as soon as we walk in. It is one of optimism, power, and of course glitter.”

Kristen Poindexter, Kindergarten, Spring Mill Elementary School, Indianapolis, Indiana
“I try very hard to make my classroom a place where memorable experiences happen. I use songs, finger plays, movement, and interactive activities to help cement concepts in their minds. It makes my teacher heart so happy when past students walk by my classroom and start their sentence with, “Remember when we…?”. We recently transformed our classroom into a Mad Science Lab where we investigated more about our 5 Senses.”


Brittany, 9th Grade Biology, Dallas, Texas
“I love my classroom environment because I teach Biology, it’s easy to relate every topic back to Forensics and real-life investigations! Mystery always gets the students going!”


Ms. Heaton, First Grade, Westampton, New Jersey
“As an educator, it is my goal to create a classroom environment that is positive and welcoming for students. I wanted to create a learning environment where students feel comfortable and in return stimulates student learning. A classroom is a second home for students so I wanted to ensure that the space was bright, friendly, and organized for the students to be able to use each and every day.”

D’Essence Grant, 8th Grade ELA, KIPP Houston, Houston, Texas
“Intentionally decorating my classroom was my first act of showing my students I care about them. I pride myself on building relationships with my students and them knowing I care about them inside and outside of the classroom. Taking the time to make the classroom meaningful and creative as well building a safe place for our community helps establish an effective classroom setting.”


Jayme Wiertzema, Elementary Art, Worthington, Minnesota
“I’m looking forward to having a CLASSROOM this year. The past two years I have taught from a cart and this year my amazing school district allowed me to have a classroom in our school that is busting at the seams! I’m so excited to use my classroom environment to inspire creativity in my students, get to know them and learn from their amazing imaginations in art class!”


Melissa Vecchio, 4th Grade, Queens, New York
“Since so much of a student’s time is spent inside their classroom, the environment should be neat, organized, easy to move around in but most of all positive. I love to use a theme to reinforce great behavior. I always give the students a choice in helping to design bulletin boards and desk arrangements. When they are involved they take pride in the classroom, and enjoy being there.”