From this website there are two download procedures to choose from:

The AEIS Data in Excel option allows flexibility in how much is downloaded—whether at the campus, district, region, or state level. The selected campus and district data may also be downloaded in comma- or tab-delimited ASCII format.

The AEIS Data in ASCII provides ALL the AEIS data at the campus, district, region or state level in a comma-delimited format. This option does not include the Excel format.

Please note that all reports, including these download applications, employ significant masking of performance data in order to comply with the Family Educational Rights and Privacy Act (FERPA). In the download files, masked values are represented with various negative values (-1, -2, -3, -4, -99) indicating the source data are unavailable. For detailed information, please see the Explanation of Masking.

AEIS Glossary | 2004-05 AEIS | Performance Reporting