Documentation

Page Menu:

• General Information
• Coding Information
• Data Cleaning Report Information
  • Built-In Reports
  • Emailed Reports
• Communication
• Phase 2 Information

NOTE: All new CSDE web content must be ADA compliant. 2025-26 documentation will be posted as it clears accessibility checks.

General Information:

• New User Checklist If you are new to the ED166 Application start here.
• 2025-26 Record Layout This document defines all fields collected and all codes used in the collection.
  • 2025-26 Change Log This document lists any updates made to the record layout during the collection year, as well as changes from the prior year.
• Application User Guide  This document provides an overview of each screen of the ED166 application. 
• Certification Instructions - Documents that illustrate how to complete each phase of the collection: 
  • Fall Pre-Certification (not currently implemented)
  • Mid-Year Pre-Certification (due in March)
  • Phase 1 Pre-Certification (due in July)
  • Phase 2 Final Certification (due in August)
    • Final Certification Checklist - it is recommended to review these items prior to certification

Below are the code tables found in the Record Layout:

• TABLE C: Incident Type Codes
• TABLE D: Weapon Codes
• TABLE E: Substance Codes
• TABLE F: Sanction Codes
• TABLE G: Education Provided Codes
• TABLE H: Party Taking Action
• TABLE I: Location of Incident
• TABLE J: Referring Party

• Training - This page contains documents and a video on the Mid-Year/Phase I process.
• Phase Information This one page document outlines what is expected of LEA's in each phase.
• Error Messages This document lists all upload error messages with information on how to resolve each issue. 
• 2025-26 Printable Form This form is provided only as a tool for LEA's to record data. All incidents must be submitted to CSDE electronically.  

 

Coding Information:

• Reporting Arrests This document provides guidance on identifying School-Based Arrests and how to report them. 
• Multiple Incident Types/Sanctions Guide There are two fields for both Incident Type and Sanction to accommodate when more than one incident occurs at the same time, or more than one sanction is given for a single incident.  This document provides guidance on how to code various combinations of these fields.
• Reporting an Incident that Did Not Occur at Facility Code 1 This document provides guidance on how to report and incident that took place at the students Facility Code 2.
• Parties that can Apply Sanctions This document is a grid that shows which parties can apply which sanctions without an error message.
• "Serious" Incidents List Incidents categorized as "serious" must be reported regardless of Sanction.  
• Sanction Day Requirements Sanction list that identifies when the Number of Days Sanctioned is required or optional.

Data Cleaning Report Information:

Built-In Reports:

• Arrest Reported, Not School Sponsored This document provides information on how to correctly report school and non-school-based arrests.
• Potential Duplicates And Multi-Part Records This document provides information on how to correct records identified as potential duplicate records or records that should be combined into one record. 
• Removed From Class Over 90 Minutes This report identifies all students who were reported with Sanction Type 1065 - Removed from Class and the length of the sanction was over 90 minutes. 
• Suspended Pending Expulsion Hearing This document provides guidance on how a record coded as Suspended Pending Expulsion Hearing (Sanction 1001) should be recorded prior to the end of Phase 2 .

Emailed Reports:

• Records Reported without a Sanction This report identifies records categorized as serious but do not have a sanction. This report is for informational purposes and does not have to be cleared prior to certification.

Communication:

Emails sent to all ED166 Contacts during the 2025-26 school year will be listed below. Go to the District Profile screen in the ED166 application to update the contact information for your LEA. Newest items are listed first. 

  Tuesday, October 21, 2025 Subject: ED166 Now Open

Phase 2 Information: 

• 2025-26 documents will be posted during Phase 2

Additional Information About All CSDE Data Collections:

• Visit the CSDE Data Collections page for information about all data collections, the Commissioner’s letter, the Agency Data Acquisition Plan, Timely and Accurate Information, Summary of Timely/Accurate Due Dates, certifying data, logging in, and passwords/usernames.