FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: SCHOOL ATTENDANCE BOUNDARIES IN FLORIDA 2015 - 2016

Geodataset Name:       NCES_SABS_2016
Geodataset Type:       SHAPEFILE
Geodataset Feature:    Polygon
Feature Count:         2624
GENERAL DESCRIPTION:
This polygon files contains 2015-2016 school-year data delineating school attendance boundaries. These data were collected and processed as part of the School Attendance Boundary Survey (SABS) project which was funded by NCES to create geography delineating school attendance boundaries. Original source information that was used to create these boundary files were collected over a web-based self-reporting system, through e-mail, and mailed paper maps. The web application provided instructions and assistance to users via a user guide, a frequently asked questions document, and instructional videos. Boundaries supplied outside of the online reporting system typically fell into one of six categories: a digital geographic file, such as a shapefile or KML file; digital image files, such as jpegs and pdfs; narrative descriptions; an interactive web map; Excel or pdf address lists; and paper maps. 2013 TIGER/line features (that consist of streets, hydrography, railways, etc.) were used to digitize school attendance boundaries and was the primary source of information used to digitize analog information. This practice works well as most school attendance boundaries align with streets, railways, water bodies and similar line features included in the 2015 TIGER/line "edges" files. In those few cases in which a portion of a school attendance boundary serves both sides of a street contractor staff used Esri s Imagery base map to estimate the property lines of parcels. The data digitized from analog maps and verbal descriptions do not conform to cadastral data (and many of the original GIS files created by school districts do not conform with cadastral or parcel data). The following Florida schoold districts did not participate in the 2015-2016 School Attendance Boundary Survey and, therefore, are not represented in this dataset: Bradford, Gadsden, Hardee, Jackson, Levy, Monroe, Nassau, Okaloosa, Okeechobee, Suwannee. This dataset serves as an update to the layer nces_sabs_2014.
DATA SOURCE(S):                    National Center for Education Statistics (NCES)
SCALE OF ORIGINAL SOURCE MAPS:     Varies
GEODATASET EXTENT:                 State of Florida
PUBLICATION DATE: 20180511 TIME PERIOD OF CONTENT: Begin Date: 20150812 End Date: 20160630 DOWNLOAD LINK: http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES:

Datafile Name: NCES_SABS_2016.DBF
ITEM NAME WIDTH TYPE
OBJECTID
4 OID
SrcName
55 String
ncessch
15 String
schnam
65 String
leaid
10 String
gslo
2 String
gshi
2 String
defacto
2 String
stAbbrev
2 String
LEVEL_
5 String
openEnroll
1 String
SHAPE
4 Geometry
MultiBdy
1 String
DESCRIPT
65 String
FGDLAQDATE
36 Date
AUTOID
4 Integer
SHAPE.AREA
0 Double
SHAPE.LEN
0 Double

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item
Item Description
OBJECTID Internal feature number.

SrcName School name as it was provided by the school district.

ncessch 12 character unique national ID.

schnam School name from the CCD.

leaid Unique district national ID.

gslo Low grade; PK through 12

gshi High grade; KG through 12

defacto District de facto status.
1 = Yes

0 = No


stAbbrev State abbreviation

LEVEL_ No description

openEnroll School open enrollment status.
0 = No

1 = Yes


SHAPE Feature geometry.

MultiBdy Identifies schools with boundaries that differ by grade.
0 = No

1 = Yes


DESCRIPT GeoPlan added field based on SCHNAM

FGDLAQDATE GeoPlan added field based on date data was acquired from source

AUTOID Unique ID added by GeoPlan

SHAPE.AREA Area in meters

SHAPE.LEN Perimeter in meters


USER NOTES:
A union was performed to align boundaries between school levels,
but in some cases the distance between boundaries was too large
to move without confirmation from the district. School feeder 'slivers'
remain in these areas.
The map only includes information provided by the district. Every
effort was made to ensure that all populated areas were covered
by school boundaries, but in some instances 'Unassigned' polygons
cover populated Census blocks.
GeoPlan relied on the integrity of the attribute information within
the original data.
Suggested Citation:
Geverdt, D., (2018). School Attendance Boundary Survey (SABS) File
Documentation: 2015-16 (NCES 2018-099). U.S. Department of
Education. Washington, DC: National Center for Education Statistics.
Retrieved [date] from http://nces.ed.gov/pubsearch.

Review SABS File Documentation for further information:
https://nces.ed.gov/programs/edge/docs/EDGE_SABS_2015_2016_TECHDOC.pdf

The School Attendance Boundary Survey (SABS) Geodatabase is designed to improve
the quality and accessibility of educational geography and tabular data to
school personnel, researchers, and policy makers. A primary goal is to integrate
diverse spatial information delineating school attendance boundaries into a
single, uniform, digital GIS database that will result in an original, geographically
rich data set. Every school catchment area has a uniform data structure and a
unique identification number that associates it with the appropriate school.
This standardized identifying information will allow users to analyze thousands
of geographic features collected and distributed by NCES-saving individual
researchers the necessity of collecting and organizing these data in a piece-meal
fashion. By providing the public with a mapping system that contains detailed
boundary information on all public schools across the nation, it will become
possible for school personnel, researchers, and policy makers to examine
relationships between schools in the same district or across the nation. Using
this information can raise awareness of the number of students in areas
hit by natural disasters and could aid relief and planning efforts by the
Department of Homeland Security.

This data is provided 'as is' and its horizontal positional accuracy
has not been verified by GeoPlan

This data is provided 'as is' and its vertical positional accuracy
has not been verified by GeoPlan

The SABS dataset is intended for research purposes only and reflects
a single snapshot in time. School boundaries frequently change from
year to year. To verify legal descriptions of boundaries, users must
contact the school district directly.

The Florida Geographic Data Library is a collection of Geospatial Data
compiled by the University of Florida GeoPlan Center with support from
the Florida Department of Transportation. GIS data available in FGDL is
collected from various state, federal, and other agencies (data sources)
who are data stewards, producers, or publishers. The data available in
FGDL may not be the most current version of the data offered by the
data source. University of Florida GeoPlan Center makes no guarantees
about the currentness of the data and suggests that data users check
with the data source to see if more recent versions of the data exist.

Furthermore, the GIS data available in the FGDL are provided 'as is'.
The University of Florida GeoPlan Center makes no warranties, guaranties
or representations as to the truth, accuracy or completeness of the data
provided by the data sources. The University of Florida GeoPlan Center
makes no representations or warranties about the quality or suitability
of the materials, either expressly or implied, including but not limited
to any implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. The University of Florida GeoPlan Center
shall not be liable for any damages suffered as a result of using,
modifying, contributing or distributing the materials.

A note about data scale: 

Scale is an important factor in data usage.  Certain scale datasets
are not suitable for some project, analysis, or modeling purposes.
Please be sure you are using the best available data. 

1:24000 scale datasets are recommended for projects that are at the
county level.
1:24000 data should NOT be used for high accuracy base mapping such
as property parcel boundaries.
1:100000 scale datasets are recommended for projects that are at the
multi-county or regional level.
1:125000 scale datasets are recommended for projects that are at the
regional or state level or larger.

Vector datasets with no defined scale or accuracy should be
considered suspect. Make sure you are familiar with your data
before using it for projects or analysis. Every effort has been
made to supply the user with data documentation. For additional
information, see the References section and the Data Source Contact
section of this documentation. For more information regarding
scale and accuracy, see our webpage at:
http://geoplan.ufl.edu/education.html

REFERENCES:


DATA LINEAGE SUMMARY:
Project into processing geodatabase.
Process Date: 20160201

Merge School Level Feature Classes: Merged all applicable school level feature classes, such as primary, middle, and high, into a new single feature class. Process Date: 20160201
Fuzzy Join by Level: Uses fuzzy string comparison to append a field from the Join Feature Class to the Target Feature Class. Candidates for the match are limited by a where class. Process Date: 20160201
Verify School Completeness by District: This tool uses the NCESSCH attribute to check for duplicate IDs, valid IDs, and it checks for missing schools. Process Date: 20160201
Assign, Dissolve, Append, and Join: Brings together the feature class that contains the school attribute details and updates them with their most current boundaries. The Dissolve operation is used to extract each level of school boundaries and transforms them into a multipart polygon. Next, the extracted features are merged through the Append operation. Since the Dissolve operation will remove the attributes of the data, a Join operation is performed as the last step to restore these attributes by joining the merged features with the original multipart school feature class. Process Date: 20160201
Union, Clip, Union, and Multipart to Singlepart: Unions all levels of school boundaries together, then clips them to their district boundary. The final step unions the clipped boundaries to the district boundary. Process Date: 20160201
Add Required Fields: Automatically copied attributes from fields provided by the school district into SABS schema. This tool also added and populated SrcLvel and LEAID.Unnecessary fields were deleted during this step Process Date: 20160201
Geometry Tolerance Check: Compares dissolved school boundaries with the Census School District Boundary and identifies non-identical areas greater than the default minimum tolerance of 0.001 meters. Process Date: 20160201
Add Boundary IDs: Calculates the BdyID field to ncessch +01, then +02 for the second boundary of the same school, +03 for the third boundary, etc. Tool will also populate: contactID- 999999 updateDate- now() stAbbrev- two character limit boundary_complete- Y/N Process Date: 20160201
Spatial Check for Missing Grades: This tool uses the CCD and a single district feature class to find geographic areas that are not covered by a specific grade range. Process Date: 20160201
The GeoPlan Center took the following steps during the QA/QC process: - Downloaded the dataset from NCES on 8/27/2018 using this link: https://nces.ed.gov/programs/edge/sabs (original dataset in shapefile format and in the WGS 1984 geographic coordinate system). - Only features in Florida were desired, so a Select By Attribute was run and features with the STABBREV field equal to FL were selected. These features were exported to a new layer. - Dataset projected into the FGDL Albers HPGN projection using WGS_1984_(ITRF00)_To_NAD_1983 + NAD_1983_To_HARN_Florida. - DESCRIPT field added based on the SCHNAM field. - FGDLAQDATE field added based on the date the dataset was downloaded from source. - The longest record for each field was found and field character lengths were shortened to the appropriate shortest length possible. - Uppercased fields and appropriate records in the dataset. - Layer name changed from SABS_1516.shp to nces_sabs_2016.shp. Process Date: 20180828
Dataset copied. Process Date: 20180906
MAP PROJECTION PARAMETERS:

Projection                          ALBERS
Datum                               HPGN
Units                               METERS
Spheroid                            GRS1980
1st Standard Parallel               24  0  0.000
2nd Standard Parallel               31 30  0.000
Central Meridian                   -84 00  0.000
Latitude of Projection's Origin     24  0  0.000
False Easting (meters)              400000.00000
False Northing (meters)             0.00000

DATA SOURCE CONTACT (S):

Name:
Abbr. Name:
Address:


Phone:

Web site:
E-mail:
Contact Person:
         Phone:
        E-mail:
National Center for Education Statistics
NCES
550 12th Street SW
Washington, DC
20202
202-245-7675

https://nces.ed.gov/programs/edge/sabs Douglas.Geverdt@ed.gov Doug Geverdt

FGDL CONTACT:
Name:                   FLORIDA GEOGRAPHIC DATA LIBRARY
Abbr. Name:             FGDL
Address:                Florida Geographic Data Library
                        431 Architecture Building
                        PO Box 115706
                        Gainesville, FL  32611-5706
Web site:               http://www.fgdl.org

Contact FGDL: 

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