Change Text Size: Normal TextMedium TextLarge Text
California Department of EducationA logo depicting elements of public education. A globe, a student at school, a computer lab, and a school bus

2012 STAR Test Results

Research File Download Instructions

STAR Home | Test Results Search | Test Results Adv. Search | Research Files | Help | About 2012 STAR | Contact Us

Formats, File Layouts, and Usage

Please note that using the research files provided at this site requires expertise in the management of large data files. These files can range from 1MB up to 130MB and more and take many hours to download if you have low Internet bandwidth.

Working with these research files requires advanced data management skills. Many of the district and county research files are too large for spreadsheet applications such as MS Excel. Database applications such as MS Access, SAS, or SPSS will be required to fully manage these research files.

There are on average 900 records for each entity (school, district, county, or state). Each record represents a different combination of demographic subgroups, grade levels, and test types. With so many records per entity, it is critical that the desired combination of characteristics is selected accurately.

Copying individual report pages into a spreadsheet application is possible if the target computer is using the most current operating systems and spreadsheet application versions, and has sufficient computer memory.

Selecting a Research File

The research files contain the aggregate score data for the California Standards Tests (CSTs), the California Modified Assessment (CMA), the California Alternate Performance Assessment (CAPA), and the Standards-based Tests in Spanish (STS). The research files are available in three formats: XML, fixed width and comma delimited. A statewide research file containing the state, county, district, and school data for “All Students” (no demographic subgroup data) will be available in all three formats. In addition, a similar statewide research file containing the data for “All Subgroups” is available in each format.

Files can also be downloaded for any single county or district. These files contain all data (all subgroups and tests) for all entities comprising the selected entity. For example, if a district file is selected, the data for all schools in that district will be included in the file. The research files are comma delimited and zipped to allow for easier download and file import management. “School only” files are not available.

The Entities file contains all school, district, and county names. This file must be merged with the research file to join these entity names with the appropriate score data. A database program such as MS Access is most appropriate for this purpose.

Research File Formats, Layouts, and Lookup Tables

Research file layouts and value lookup tables are available on the Research File Layout page.

The Research File Layout provides the following information:

  • Type Legend–data format of individual data fields
  • Entities File–layout of entity file data fields
  • Test Data File–layout of test data file data fields
  • Table A–demographic subgroup listing
  • Table B–grade listing
  • Table C–test name listing
  • Table D–CAPA Levels and corresponding grade-spans

Users of comma delimited research files will find these layouts useful in confirming the sequence of elements as well as value lookup. Users may view and/or download any of the layouts and tables.

Also available from the Research File Layout page are two additional comma delimited lookup files:

  • Test ID/Name Lookup Table – This table identifies the subject test name and ID for each CST, CMA, CAPA, and STS test.
  • Subgroup ID/Name Lookup Table – This table identifies each demographic subgroup and ID reported in the STAR results.

Both of these lookup tables are useful when associating test and subgroup IDs and names with codes in the XML, comma delimited, or fixed width test data file.

A database “shell” is another alternative provided at this site. Once downloaded to the target computer, this application provides a powerful school, district, CDS, and ZIP code search capability as well as a formatted report containing all the data for the selected entity. This MS Access 2003 shell contains all entity data and is designed to import any of the selected state, county, or district comma delimited files. In order to use the shell, MS Access 2003 must already be installed on your computer.

Instructions for Downloading Data Files

Downloading Instructions for PC Users

  1. Select the link for the file type that you will be using (CSV, TXT or XML).
  2. Save the compressed data file to your workstation or pc.
  3. Uncompress the file. Each file has been compressed and will require compression software to uncompress the file. An evaluation copy of WinZip is available at no cost at http://www.winzip.com. (Outside source)

Downloading Instructions for Mac Users

  1. Select the link for the file type that you will be using (CSV, TXT or XML).
  2. Save the compressed data file to your workstation or pc.
  3. Uncompress the file. Each file has been compressed and will require compression software to uncompress the file. An evaluation copy of Stuffit Expander is available at no cost at http://www.stuffit.com/win/expander/index.html. (Outside source)

Downloading the Access Database Shell (Note: MS Access2003 must already be installed on the target computer)

  1. Under the Access Database – Main Component heading, select Access Database – Main Component.
  2. Save the compressed file to your computer.
  3. Uncompress the zipped file to your computer.
  4. Identify and download a statewide, county, or district csv (comma delimited) file containing the data you wish to evaluate according to the directions above. Be sure to place the uncompressed data file in the same directory as the Access Database – Main Component.
  5. Open the Access Database. The program will give you the option of importing any score data file in the same directory.
  6. Select the file(s) to import. (Note: the Access Database – Main Component already contains all entity data.)

Getting Accurate Results from the Research Files

Achieving accurate results when working with these research files requires an understanding of the structure and content of the two primary tables: the entities table and the test data table. The research files have many rows for each entity. There are records for each combination of grades (including end-of-course as a grade), tests, and subgroups. This means that there are hundreds to thousands of records for each entity, with an average of approximately 900 records. In order to correctly work with the data, you must use constraints to limit the data you are reporting. These constraints are discussed below.

Entities table – This table is comprised of the state, all counties, districts, and schools in California. Because there are both school-level and district summary records as well as county and state summary records, it is critical that in any analysis, a “Type ID” record type be selected. This will help avoid the double or triple-counting that will occur when a school count is also counted in the associated district record.

Test Data table – This table is comprised of the school, district, county, and state aggregate STAR counts and scores.

To accurately analyze and report from these research files, the appropriate constraints must be applied to the following elements:

  • CDS code – The research files contain summary district and county records. A district summary record will have a “school” code of “0000000.” When working with the file, be sure to include the county, district, and school codes. Failure to include all three will result in double-counting in any summary calculations.
  • Test type – Identifying the desired test (CST, CMA, CAPA, or STS) will help to provide clear query results.
  • Subgroup ID – Each student will be included in both the “All Students” subgroup aggregation and each of the appropriate subgroup aggregations. Consequently, an individual subgroup must be selected to avoid duplicate counts.
  • Test ID – In general, each student will take a number of tests (e.g., a grade five student may take the CMA for ELA and CSTs for mathematics and science). Consequently, a specific test should be selected to avoid confusion.

Providing accurate and meaningful reports from the research files generally requires the “linking” of the 2012 Entities and Test Data tables. Additional efforts might include linking to the “lookup” tables discussed above. Working with these tables requires an understanding of “relational” data tables and their manipulation.