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Monthly Enrollment

The official headcount of students for any given school year is taken on the last school day of each month. The statistics are listed by grade in each school.

2023-24 School Year

2022-23 School Year

2021-22 School Year

2020-21 School Year

2019-20 School Year

2018-19 School Year

For data for earlier years, contact engage@apsva.us.

Class Size Report

Information about class sizes within Arlington is reported annually. All data reported in each year’s report reflects the official September 30 enrollment.



Arlington Public Schools monitors student enrollment and assesses the need for capacity in our schools on an ongoing basis. Several APS reports are produced annually to provide an estimate of student enrollment and insight into capacity needs for the future. The process of projecting student enrollment is fluid and dynamic, reflecting changes in County birth rates, housing development, migration, and other criteria that factor into the projections process. The enrollment and projection reports are used for planning purposes to ensure sufficient capacity, budget, staffing, and other resources to meet student needs.

Report Name Report Content Primary Uses  Most Recent
Fall 2023 10-Year Enrollment Projections Report
  • Annual total school projections
  • Reflects projected enrollment only
  • Does not include information on existing or planned capacity
  • Used to prepare the Superintendent’s recommended budget for the upcoming school year, including staffing for schools
Fall 2023 10-Year Enrollment Projections Report (2024 to 2033)
2024 Student Generation Rates
Factor that represents the relationship between the number of housing units in Arlington County and the number of students enrolled at APS on September 30th for a given year. This factor is multiplied by the projected housing to estimate the future student yield from a particular residential development project when completed. 2024 Student Generation Rates
Capacity Utilization Tables
Capacity utilization measures the extent that school buildings are occupied by comparing actual and projected PreK to Grade 12 student enrollment to the permanent seat capacity at each school. The purpose of the capacity utilization table is to show projected seat availability by school and by year for the next decade. This data helps APS to assess capacity needs and the type of solution (capital or non‐capital) to accommodate students.  

Capacity Utilization Tables, School Years 2023-24 to 2033-34

Spring 1-Year Projection Update
  • Uses January enrollment data to update projections for following year
  • Reflects the lottery seat assignments, targeted transfers, neighborhood transfers, and PreK moves determined in the Enrollment Management Plan
  • Does not include information on existing or planned capacity
  • Used for updating the budget for the next fiscal year
  • Helps allocate staffing and resources for upcoming school year


Enrollment Management Plan

The details in this report are framed around the following tools that APS uses to address near-term capacity changes:

  • Adding relocatable classrooms
  • Offering transfers to neighborhood schools that have space for additional students
  • Increasing or decreasing the number of students or classes accepted via the lottery at each of the option schools/programs
  • Moving programs
  • Changing how classrooms are used (i.e., converting computer labs to classrooms)

Intended to be a one-stop resource that communicates what is in place currently to address enrollment growth, and the plans for continuous improvements to the process for addressing near-term capacity needs

  • This report is published following any Fall boundary changes

2024 Enrollment Management Plan 3.15.24

Enrollment Projections, Budget & Staffing Timeline


Pupil Transfer Report

This report provides information about student transfers within Arlington in a school year. A transfer student is a student who attends a school, but does not reside within that school’s boundaries, or one who attends a school that does not have an attendance area, that is, it is not a neighborhood school. Factors which affect the number of transfers allowed are the previous September 30 membership, and projected enrollment.According to School Board Policy J-5.3.31, most Arlington schools may accept transfers as long as the number of transfers does not exceed five percent based on the previous September 30 membership. In this report, these schools are referred to as neighborhood schools.

For data older than 2015-16, please email engage@apsva.us.

For information on neighborhood transfers, targeted transfers and option school transfers, please visit Options & Transfers Application Data.

Elementary - Student:Teacher Ratio

This report provides information about school-wide student:teacher ratios at APS Elementary Schools as required in the Virginia Standards of Quality (SOQ). This report will be produced and posted annually, on or before January 1.

Secondary Enrollment

The official headcount of students for any given school year is taken on the last school day of each month. Secondary Program Enrollment is based on the official headcount and is listed by grade in each school.

2023-24 School Year

2022-23 School Year

2021-22 School Year

How Class Sizes Are Balanced

Projecting the number of students who will attend school in an upcoming year is extremely important. Student enrollment projections are vital in the planning of class sizes, teacher assignments, room assignments and acquisition of materials for those classes. When school begins in September, we often see slight changes in our actual enrollment numbers when compared to what had been projected. Students who were expected at a school may have moved out of the area or more students than anticipated may have moved into a neighborhood school area. These and other variances in our ever-changing community may require us to reexamine staffing to ensure that our teaching staff is utilized in the best and most balanced way possible. The procedure to balance classes begins as early as February, about seven months before the start of the upcoming school year. The following is a summary of the process:


Spring enrollment projections are reviewed. Principals provide feedback regarding the projected number of students estimated for the upcoming school year. Preliminary staffing allocations, including special education and English as a Second Language/High Intensity Language Training (ESOL/HILT), are forwarded to principals and Senior Staff.


Staffing allocations for the upcoming school year are determined and forwarded to principals and Senior Staff.


Principals work with staff and parents in reaffirming the projected number of students who will be returning to school in Arlington for the upcoming school year.


Principals’ requests for reallocation of staff, based on changes, special needs or special circumstances, are considered by Senior Staff. Special staffing requests are considered weekly, reviewing information provided by principals and other staff to determine staffing levels and areas where staff may need to be increased or reduced. Aspects of the process include:

  • Personnel Services and Administrative Services staff members visit with school staff to review staffing allocations. Student Services staff assist in determining staffing needs in Special Education.
  • Finance staff determine staffing allocations in all areas based on enrollment and the approved planning factors for each grade level and curriculum area.
  • Facilities and Operations staff works with schools to provide enrollment projections and make recommendations regarding space needs at the individual schools.
  • Division of Instruction staff assists to review and make staff recommendations in program areas such as ESOL/HILT, Language Arts and Title I.


The actual number of students enrolled are examined twice in September – on the seventh day of classes and on September 30.


Based on the actual enrollment figures of September 30, staff are moved when class sizes are extremely low in one school and when there is a need for a comparable position in another school. Enrollment projections, actual enrollment figures, class sizes and the impact of a move on the students, the school and the overall program are some of the factors considered when teachers are moved. The Assistant Superintendent of Personnel Services works with principals and teachers in coordinating any necessary reassignments. The Assistant Superintendent of Student Services works with Personnel Services when special education teachers and/or assistants need to be reassigned.


Changes in staffing allocations are examined continually throughout the school year. The impact of new students who are enrolled throughout the year is considered regularly, and staff are added to accommodate these changes as needed.

Enrollment Projections and Capacity Utilization - ARCHIVES

ARCHIVED – Superintendent’s Annual Update Report

ARCHIVED – Fall 10-Year Projection Tables

ARCHIVED – Annual Enrollment Projections Report

ARCHIVED – Student Generation Rates

ARCHIVED – Spring 1-Year Projection Update

ARCHIVED Capacity Utilization Report