Class Size Report

New York City Department of Education: Class Size Report Comparison of Methodologies

2012-2013 Methodology

For Grades K-9 (*indicates change from the 2011-12 methodology)

Data reported by:

  • Grade level
  • Program type
  • Core subject and core course (for grades 5-9, where available)

Program types:

  • General Education (Gen Ed)
  • Integrated Co-Teaching (ICT) (formerly Collaborative Team Teaching (CTT))
  • Self-contained Special Education (Spec Ed), by service level
  • Gifted and Talented (G&T)
  • Gifted and Talented and ICT (G&T and ICT) *

Methodology:

  • Class size is calculated by dividing the number of students in a program and grade by the number of official classes in that program and grade.
  • For schools where core course data is available for grades 5-9, class size is calculated by dividing the number of students in a course by the number of sections in that course, regardless of the grade level of the students enrolled.
  • ICT sections that are coded as two separate sections for their General Ed and ICT student cohort will be matched together based on day, period, room, and Core course code.

Included:

  • All official classes
  • Grade 9 official classes are included in schools where it is the terminating grade (i.e. 6-9 schools)
  • All courses identified by Core Subject from Table A  as English, Math, Social Studies and Science for grades 5-9, where available in STARS. *

Excluded:

  • Non-ICT bridge classes
  • General education classes  and course sections with more than 100 students
  • General education classes and course sections  with less than 5 students
  • Self-contained official classes with less than 2 students, self contained core courses sections  with less than 5 students

Source: ATS, STARS

For Grades 9-12:

Data reported by:

  • Core subject
  • Core course
  • Program type

Program types:

  • General Education (Gen Ed)
  • Integrated Co-Teaching (ICT)
  • Self-contained Special Education (Spec Ed)

Methodology:

  • Class size is calculated by dividing the number of students in a course by the number of course sections in that course, regardless of the grade level of the students enrolled.
  • ICT sections that are coded as two separate sections for their General Ed and ICT student cohort will be matched together based on day, period, room, and Core course code.

Included:

  • All courses Table A below in grades 5-9, where available in STARS. *

Excluded:

  • General education course sections with more than 100 students
  • General education course sections with less than 10 students
  • Self-contained course sections with less than 5 students
  • Extended day and extended session courses
  • Course sections scheduled for day 00 and 06 
  • Non-core middle school courses

Source: ATS, STARS

Table A: Courses included in 2012-2013 report
Dept Name Core Subject Description
English/ESL Communications
English/ESL Core ELA
English/ESL Journalism
English/ESL Literature
English/ESL Other English
English/ESL ESL
English/ESL Writing
Mathematics Calculus
Mathematics Integrated Algebra
Mathematics Geometry
Mathematics Technology
Mathematics Core Math
Mathematics Pre-calculus
Mathematics Other Math
Mathematics Algebra 2/Trig
Mathematics Statistics
Science Biology
Science Chemistry
Science Other Physical Sciences
Science Earth Science
Science Forensics
Science Agriculture
Science Health Science
Science Technology
Science Living Environment
Science Physics
Science Other Science
Science Astronomy
Science Core Science
Science Other Life Sciences
Social Studies Behavioral Sciences
Social Studies Economics
Social Studies Gov't and Econ
Social Studies Global History
Social Studies Law
Social Studies Geography
Social Studies Other Social Studies
Social Studies History of "_"
Social Studies Core Social Studies
Social Studies Other Government
Social Studies United States History Accelerated
Social Studies Participation in Government


2010-11, 2011-2012 Methodology

For Grades K-9 (*indicates change from the 2009-10 methodology)

Data reported by:

  • Grade level
  • Program type
  • Core subject and core course (for grades 5-9, where available)

Program types:

  • General Education (Gen Ed)
  • Integrated Co-Teaching (ICT) (formerly Collaborative Team Teaching (CTT))
  • Self-contained Special Education (Spec Ed), by service level
  • Gifted and Talented (G&T)

Methodology:

  • Class size is calculated by dividing the number of students in a program and grade by the number of official classes in that program and grade.
  • For schools where core course data is available for grades 5-9, class size is calculated by dividing the number of students in a course by the number of official classes in that course, regardless of the grade level of the students enrolled.
  • ICT sections that are coded as two separate sections for their General Ed and ICT student cohort will be matched together based on day, period, room, and CoreSubjectID. *

Included:

  • All official classes
  • Grade 9 included in schools where it is the terminating grade (i.e. 6-9 schools)
  • All courses identified by CoreSubjectID as English, Math, Social Studies and Science for grades 5-9, where available in STARS. *

Excluded:

  • Non-ICT bridge classes
  • General education classes with more than 100 students
  • General education classes with less than 5 students
  • Self-contained classes with less than 2 students

Source: ATS, STARS

For Grades 9-12:

Data reported by:

  • Core subject
  • Core course
  • Program type

Program types:

  • General Education (Gen Ed)
  • Integrated Co-Teaching (ICT)
  • Self-contained Special Education (Spec Ed)

Methodology:

  • Class size is calculated by dividing the number of students in a course by the number of official classes in that course, regardless of the grade level of the students enrolled.
  • ICT sections that are coded as two separate sections for their General Ed and ICT student cohort will be matched together based on day, period, room, and CoreSubjectID. *

Included:

  • All courses identified by CoreSubjectID as English, Math, Social Studies and Science for grades 5-9, where available in STARS. *

Excluded:

  • General education classes with more than 100 students
  • General education classes with less than 10 students
  • Self-contained classes with less than 3 students
  • Extended day and extended session classes
  • Course sections scheduled for day 00 and 06
  • Elective courses

Source: ATS, STARS

2008-09, 2009-10 Methodology

For Grades K-9 (*indicates change from the 2007-08 methodology)

Data reported by:

  • Grade level
  • Program type
  • Core subject and core course (for grades 5-9, where available) *

Program types:

  • General Education (Gen Ed)
  • Collaborative Team Teaching (CTT)
  • Self-contained Special Education (Spec Ed), by service level
  • Gifted and Talented (G&T)

Methodology:

  • Class size is calculated by dividing the number of students in a program and grade by the number of official classes in that program and grade.
  • For schools where core course data is available for grades 5-9, class size is calculated by dividing the number of students in a course by the number of official classes in that course, regardless of the grade level of the students enrolled *

Included:

All official classes

  • All courses coded as English, Math, Social Studies and Science for grades 5-9, where available *

Excluded:

  • Non-CTT bridge classes
  • General education classes with more than 100 students
  • General education classes with less than 5 students
  • Self-contained classes with less than 2 students

Source: ATS, MSPA*

For Grades 9-12:

Data reported by:

  • Core subject
  • Core course
  • Program type

Program types:

  • General Education (Gen Ed)
  • Collaborative Team Teaching (CTT); Note that sections with matching day, period, room and core subject, and combined enrollment less than 34, are assumed to be co-teaching situations. In the report, duplicated sections are subtracted as "MATCHED SECTIONS" and paired sections are added back as "ASSUMED TEAM TEACHING".*
  • Self-contained Special Education (Spec Ed)

Methodology:

    Class size is calculated by dividing the number of students in a course by the number of official classes in that course, regardless of the grade level of the students enrolled.

Included:

  • Courses where the core class flag is equal to “Y” in the following subjects:
  • English classes (courses beginning with “E”)
  • Science classes (beginning with “S”)
  • Math classes (courses beginning with “M”)
  • Social Studies classes (courses beginning with “H”)

Excluded:

  • General education classes with more than 100 students
  • General education classes with less than 10 students
  • Self-contained classes with less than 3 students
  • Extended day and extended session classes
  • Course sections scheduled for day 00 and 06
  • Elective courses

Source: HSST/STARS, ATS

2007-2008 Methodology

For Grades K-9:

Data reported by:

  • Grade level
  • Program type

Program types:

  • General Education (Gen Ed)
  • Collaborative Team Teaching (CTT)
  • Self-contained Special Educ (Spec Ed), by service level
  • Gifted and Talented (G&T)

Methodology:

  • Class size is calculated by dividing the number of students in a program and grade by the number of official classes in that program and grade.

Included:

  • All official classes

Excluded:

  • Non-CTT bridge classes
  • General education classes with more than 100 students
  • General education classes with less than 5 students
  • Self-contained classes with less than 2 students

Source: ATS

For Grades 9-12:

Data reported by:

  • Core subject
  • Core course
  • Program type

Program types:

  • General Education (Gen Ed)
  • Collaborative Team Teaching (CTT)
  • Self-contained Special Education (Spec Ed)

Methodology:

  • Class size is calculated by dividing the number of students in a course by the number of official classes in that course, regardless of the grade level of the students enrolled.

Included:

  • Courses where the core class flag is equal to “Y” in the following subjects:
  • English classes (courses beginning with “E”)
  • Science classes (beginning with “S”)
  • Math classes (courses beginning with “M”)
  • Social Studies classes (courses beginning with “H”)

Excluded:

  • General education classes with more than 100 students
  • General education classes with less than 10 students
  • Self-contained classes with less than 3 students
  • Extended day and extended session classes
  • Course sections scheduled for day 00 and 06
  • Elective courses

Source: HSST, ATS

2006-07 Methodology

For Grades K-9:

Data reported by:

  • Grade level
  •  Program type

Program types:

  • General Education (Gen Ed)
  • Collaborative Team Teaching (CTT)
  • Self-contained Special Educ (Spec Ed), by service level
  • Gifted and Talented (G&T)

Methodology:

  • Class size is calculated by dividing the number of students in a program and grade by the number of official classes in that program and grade.

Included:

  • All official classes

 

Excluded:

  • Non-CTT bridge classes
  • General education classes with more than 100 students
  • General education classes with less than 5 students
  • Self-contained classes with less than 2 students

Source: ATS

For Grades 9-12:

Data reported by:

  • Grade
  • Core subject
  • Program type


Program types:

  • General Education (Gen Ed)
  • Special Education: Self-contained by service level (12:1, 12:1:1, etc.), Mainstream

Methodology:

  • Since high school classes may contain students in multiple grades and programs, class size is calculated by taking a weighted average of all the classes in a core subject area with students in a particular grade or program.

 

Included:

  • English classes (courses beginning with “E”)
  • Science classes (courses beginning with “S”)
  • Math classes (courses beginning with “M”)
  • Social studies classes (courses beginning with “H”)

Excluded:

  • General education classes with more than 100 students
  • General education classes with less than 10 students
  • Self-contained classes with less than 3 students
  • Extended day classes


Source: HSST, ATS