The 12-month Enrollment count is the unduplicated headcount of students enrolled over a 12-month period. Because this enrollment measure encompasses an entire year, it provides a more complete picture of the number of students at non-traditional institutions that enroll students year round or for short-term programs.

Data collected include:

• Unduplicated headcounts by level of student, race/ethnicity, and gender;
• Instructional activity (total hours students are engaged in instruction); and
• Full-time equivalent (FTE) enrollment (calculated based on instructional activity).

FTE provides a meaningful combination of full- and part-time students across institutions that operate on different calendar systems and is used to calculate expenses per FTE and revenues per FTE.

• Race/Ethnicity Information Center
• How Institutions Report Study Abroad Students
• Data Release Cycle Information
• The History and Origins of Survey Items (2022–23 Update)
• Data use tip sheet: Using Student Financial Aid (SFA) and Fall (EF) or 12 Month (E12) Enrollment data to calculate how many undergraduates receive financial aid
• Distance Education in IPEDS
• Timing of IPEDS Data Collection
• Student Cohorts and Subgroups in IPEDS

• Survey Materials

• Provides an overview of the survey component
• Explains the difference between fall enrollment and 12-month enrollment
• Explains at which students to include when reporting 12-month and fall enrollment counts
• Explains how to use edit explanations and context boxes
• Discusses the calculation of the full-time equivalent student enrollment measure for clock hour reporters
• Discusses the calculation and uses of the full-time equivalent student enrollment measure for credit hour reporters
• NCES Tutorials for Using IPEDS Data