FRESNO UNIFIED SCHOOL DISTRICT
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 ACS-HS Oct 22, 2014 


  METHOD FOR STUDY OF STUDENT MOVEMENT
Transiency Rates have been calculated and reported in Fresno Unified School District for 20+ years. The records and procedures for determining this measure have been relatively stable over time and have been used to estimate the number of students served at a school for Title I reporting. However, difficulties in determining the effects to which calendar changes and track leveling have inflated the numbers have caused us to look at other methods. A few years ago, we started gathering data to calculate mobility and stability rates as determined by the Pulliam Group.

At present we have the following two ways of examining the movement of students in our district: mobility and stability. The Office of Research, Evaluation & Assessment is studying these methods to determine usability, as well as reliability and validity of the data. We are very interested in sharing our findings and learning how other large, urban districts are using this information. The formula used for calculating the ratios, as well as a brief narrative describing each of the methods, its use and limitation, is included here.

  TRANSIENCY RATE (not available beyond 2001-02)
Originally part of the California State Title I reporting procedure, transiency rates are based on cumulative attendance periods for the school year and have been used to estimate the number of students served at each site for the entire school year. Transiency rates are subject to over-representation whenever a school changes attendance calendar periods (year-round to traditional track). Also, because the rate is based on the number of enrollments, transfers and drops, students who are moved from one track to another, and students whose enrollment is interrupted due to familial changes or instability, even without changing schools, can increase the rate.

The transiency rate represents the ratio of the beginning enrollment plus the total number of students entering a school minus the average daily enrollment to the average daily enrollment of the school. Average daily enrollment is calculated by dividing the total number of days of attendance into the accumulated days of enrollment for the school.

The Transiency Rate Formula:
A = Count of Enrollments During School Year
B = Accumulated Days of Enrollment
C = Average Daily Enrollment (B / #days In School Year)
D = A - C
Transiency Rate = D / C

  MOBILITY RATE
This calculation takes into account the increased number of enrollments and drops that occur in the beginning of the school year by basing its calculations on the second month through the end of the year. The November 1, point-in-time California Basic Student Database (CBEDS) is used as the base enrollment of a school. The Pulliam Group, who worked with II/USP schools in 1999-2000, introduced this formula and it has been developed for all district schools to provide a common measure for cross-site comparison. Because the district’s Technology Services reporting system was not set up to take into account the particular’s of the process (exactly what dates represented the first month of the various tracks), the process for accurate calculations has not been fully perfected. However, once reporting procedures are standardized, it could be said that the mobility rate represents the percentage of students who do not attend a given school for the entire year because it is based on this: The total number of students exiting the school during the school year added to the total number of students enrolling in the beginning of the school year, divided by the CBEDS enrollment.

Mobility Rate Formula: 
A = # of Students enrolling AFTER the first 2 months of the earliest year-round track
B = # of Students exiting during the year
C = CBEDS Enrollment
Mobility Rate = (A + B) / C

  STABILITY RATE
In contrast to the mobility rate, the stability rate is the percentage of students who do attend a given school all year. It is based on the same enrollments timeframes and records as the mobility rate and, as such, is prone to the same procedural inaccuracies. It is calculated by subtracting the total number of students exiting the school during the school year from the total number of students enrolled in the beginning of the school year, divided by the CBEDS enrollment.

Stability Rate Formula: 
A = # of students enrolling WITHIN 2 months of the earliest year-round track
B = # of students exiting during year
C = CBEDS Enrollment
Stability Rate = (A - B) / C 

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