About our data

Insideschools aims to provide up-to-date data on New York City public schools. We rely on official statistics and information from the New York City Department of Education (DOE) and the New York State Education Department (NYSED), which monitor most public schools. Charter school data not included in city statistics was provided by The Charter School Center.

Below is a list of our "go-to" data sources, along with the key information each dataset provides. These sources were also used to create Insidestats, a new feature of Insideschools, which seeks to provide useful statistics on New York City’s high schools. See Insidestats section below to get specific information on how we collect and analyze the numbers for Insidestats.

About our data: General information

School name, Address, Telephone Number, Principal name – From the DOE Office of Organizational Data LCGMS Database (updated continually)

Attendance and Data on K-12 Tests, Graduation and College Readiness – From the DOE Progress Report Database (2012-13)

Survey Information from Students, Teachers and Parents – From the DOE Learning Environment Survey (2012-13)

Student Demographics and Enrollment (including free and reduced lunch, percent of English language learners, percent of students receiving special education services, ethnicity) – From the Preliminary DOE School Demographics and Accountability Snapshot (2014)

ELA and Math Achievement Test Scores Grades 3-8 – From the DOE Achievement Test Database (2012-13)

Attendance and Enrollment for New Schools – From the DOE Period Attendance Reporting Database (updated continually)

Average Class Sizes (updated twice a year; if link is broken try searching "DOE class size report") – From DOE Class Size Report Database (2012-13)

Elementary School Special Programs (gifted and talented, dual language, and magnet programs ) – From the DOE Elementary School Directory (2013-14)

Elementary and Middle School Zone Maps - From NYC Open Data School Files School Zones (2011-12)

School Overcrowding and Utilization – From the School Construction Authority Enrollment, Capacity & Utilization Report (2011-12)

About our data: Insidestats

Insidestats is a new tool on Insideschools giving families one easy place to review and compare high school quality and outcomes. The numbers on Insidestats were collected from datasets published annually by the New York City Department of Education (DOE) and the New York State Education Department (NYSED). Some numbers were provided by special request.

See the list below for the sources and dates of each piece of information on Insidestats. We have also provided links to the original datasets, if available, for those who wish to delve deeper into the numbers.

A note about citywide averages and the color of our apples on Insidestats

Insidestats uses color-coded apples to show how well a school is doing compared to other New York City high schools. Schools that are better than the citywide average on a given indicator get a green apple. Schools that are worse than the citywide average get a red apple. Those that are around the citywide average get a neutral blue apple.

We used a common statistical calculation to determine whether a given school is below average, near the average, or better than average on each data point. This calculation is called a "standard deviation." It allows us to easily see if a number is near the citywide average or substantially better or worse than the citywide average. We used the following curve to assign the apple colors. For each measure, one-third of schools are above average, one-third are below and one-third are in the middle. (The blue section is taller because many more schools tend to be near the average. The blue section is one-half of a standard deviation from the average in each direction.)

Figure 1: A statistical illustration of how our apples were color-coded:

Apples Colors Bell Curve

 

 

 

 

 

 

 

 

 

 

 

 

In some cases, the citywide average was provided by the DOE or NYSED. When the citywide average was not available, we calculated our own citywide averages using the data we had collected. It is important to note that the averages we calculated include only general education high schools and secondary schools in Districts 1-32. We do not include data from charter schools, transfer schools or schools that primarily serve students with special needs (though we do hope to include these schools in the future). Averages have been calculated as “weighted averages,” meaning that we adjusted the averages to account for schools that are much larger or smaller than other schools.

The following table lists each measure on Insidestats, its source, and how the average was calculated. We have included links to the original dataset when it is available. If you have any questions about the numbers, datasets or our calculations, please email Kim Nauer at This email address is being protected from spambots. You need JavaScript enabled to view it. . Also let us know if you see errors or miscalculations in your school's numbers. We will correct any problems as soon as possible.

Insidestats: Sources and links

Click the linked text in blue to explore the original dataset, when available. In addition, much of this information is available on your school’s DOE website. Click “View More DOE Statistics and Info” on the bottom of each page on Insidestats to see more.

AT A GLANCE

Shared Campus - From the DOE Office of Organizational Data (2013-14)

Students Enrolled - From the DOE School Demographics and Accountability Snapshot (2013-14)

Average Daily Attendance Rate - From the DOE School Progress Report Database (2012-2013; 2013-2014 for schools opened in 2013)

Uniform Policy - From the DOE School Directories (2013-2014)

Metal Detectors - Site surveys from Insideschools and New York Civil Liberties Union (ongoing)

Student Demographics - DOE School Demographics and Accountability Snapshot (2013-14)

Free Lunch and ELL Students - DOE School Demographics and Accountability Snapshot (2013-14)

8th Grade Math/ELA Test Scores of High School’s Students - DOE High School Progress Report Database (2012-13)

Citywide Average: Calculated by taking the average of schools in the Insidestats database.

Middle School Test Scores on ELA and Math exams (for high schools that include grades 6-8) - DOE School Progress Report Database (2012-13)

Citywide Average: Calculated by taking the sum of students scoring 3 or 4 over the sum of students taking the exam.

SAFETY AND VIBE

Number of Students in an Average English Class - From the DOE Class Size Database (2013-2014)

Citywide Average: Calculated by taking an average of schools in the Insidestats database.

Student and Teacher Survey Questions - DOE Learning Environment Survey Database (2012-2013)

Note: Percentages were calculated by combining the percentage of students or teachers in the survey that answered "strongly agree" or "somewhat agree."

Citywide Average: Calculated by taking an average of schools in the Insidestats database.

Percent of Chronically Absent Students – High School Student attendance data provided by the DOE (2012-13); all other grades from the Progress Reports.

Note: Percentage calculated from the number of students missing more than 20 or more days of school year.

Citywide Average: Calculated the number of chronically absent students in each school and added up the number citywide dividing by the total number of students in those schools.

WHO GRADUATES

Class of 2013 Four-Year Graduation Rate - DOE High School Progress Report Database (2012-13)

Class of 2013 Six-Year Graduation Rate - DOE High School Progress Report Database (2012-13)

Note: The Progress Report provides preliminary graduation rate numbers. These numbers may change when the official graduation rate numbers are released in mid-2013.

Class of 2012 Four-Year Graduation Rate - NYSED Graduation Rate Database (June 2013)

Class of 2012 Six-Year Graduation Rate - NYSED Graduation Rate Database (June 2013)

Class of 2012 Advanced Regents Diploma Rate - NYSED Graduation Rate Database (June 2013)

Class of 2012 High School Dropout Rate - NYSED Graduation Rate Database (June 2013)

Citywide Averages Class of 2012: Provided in the NYSED School Level Graduation Database (2011-12)

COLLEGE PREP

School College Prep Course Offerings and Outcomes

DOE High School Progress Report Database (2011-12). Dataset includes:

Students taking at least one advanced placement class getting a 3 or better

Students taking at least one college course getting a C or better

Students passing a Regents exam for Algebra 2, MathB, Physics or Chemistry

Students entering CUNY without needing remedial help

Students graduating on time and entering college within 18 months

Citywide Average: DOE High School Progress Report Database (2011-12) when available

SAT Reading and Math Scores - DOE SAT Database (2011-12)

Citywide and Nationwide Average: DOE SAT Summary Report (2011-12)

Student Survey on Quality of College and Career Counseling

DOE Learning Environment Survey Database (2011-2012)

Note: Percentages were calculated by combining the percentage of students or teachers in the survey that answered "strongly agree" or "somewhat agree."

Citywide Average: Calculated by taking an average of schools in the Insidestats database.

SPECIAL ED AND ELL

Class of 2011 Special Ed Four-Year Graduation Rate - NYSED Graduation Rate Database (June 2012)

Class of 2011 Special Ed Six-Year Graduation Rate - NYSED Graduation Rate Database (June 2012)

Class of 2011 ELL Four-Year Graduation Rate - NYSED Graduation Rate Database (June 2012)

Class of 2011 ELL Six-Year Graduation Rate - NYSED Graduation Rate Database (June 2012)

Citywide Averages Class of 2011: Provided in the NYSED Graduation Database (June 2012)

Team Teaching/Self-Contained Classes - School Demographics and Accountability Snapshot (2011-12)

Citywide Average: Calculated by taking the average of schools in the Insidestats database

Students Spending Day with Non-Disabled Peers - Special Education Service Delivery Report (2011-2012)

Note: While there is no public database for this report, it is available on each school’s website.

Citywide Average: Calculated by taking the average of schools in the Insidestats database