Class Size Report

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

 

2008-09 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:
   o English classes (courses beginning with “E”)
   o Science classes (beginning with “S”)
   o Math classes (courses beginning with “M”)
   o 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

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:
   o English classes (courses beginning with “E”)
   o Science classes (beginning with “S”)
   o Math classes (courses beginning with “M”)
   o 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