The location for the Expected Grades with Enrollment Form and Instruction is http://www.p12.nysed.gov/irs/beds/IMF/ExpectedGradeswithEnrollmentFormsandInstructions.html. Scroll down to the "Instructions" section for general guidance. Click on the link for the 'Expected Grades with Enrollment Form & Instructions' to download a PDF version of the IDEX form.
These documents are available for reference only. You must submit your data online in the IRS Data Exchange on the Business Portal at https://portal.nysed.gov/abp.