Is it a must to provide school documents on interview date in the f2a category

You may be required to submit evidence related to your education. This is especially true if you are seeking adjustment of status in the United States and you are in the country on a student visa. You are required to establish you maintained your nonimmigrant status up until filing of the adjustment of status application. For someone on a student visa, this is done by submitting school records. You can read more about adjustment of status at http://myattorneyusa.com/adjustment-of-immigration-status.