CORE DATA / MOSIS LISTSERV NOTIFICATIONS

• Listserv archive

2025-26 COLLECTIONS

• December Discipline collection open -- 11/24/2025
• December Cycle open -- 11/17/2025
• EOC Fall Assessment precode (2nd window) open -- 10/22/2025
• WIDA ACCESS precode open -- 09/24/2025
• EOC Fall Assessment precode (1st Window) open -- 09/22/2025
• October Cycle open -- 09/16/2025
• August Cycle open -- 07/24/2025

DOCUMENTATION

• Updated 2025-26 Core Data/MOSIS Manual -- 11/21/2025
• Updated MOSIS Contact List -- 11/12/2025
• Posted 2025-26 Core Data/MOSIS Manual -- 07/15/2025
• Posted 2025-26 File Layouts -- 07/15/2025
• Posted 2025-26 Code Sets -- 07/15/2025
• Updated June Cycle FAQ document -- 06/25/2025
• Updated Timelines with 2025-26 precode dates -- 06/17/2025
• Posted June Assessment ID Cleanup Instructions -- 06/17/2025

WEBINARS

• 2026 Core Data/MOSIS Fall Webinar -- 09/16/2025 

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