FAFSA® Demonstration SiteThe FAFSA demonstration site is available so you can increase your own understanding of fafsa.gov and show it to students before they apply. At the FAFSA demo site, you can complete a sample FAFSA form, make corrections, or check the status of the form. However, when you choose "submit," the information is not actually submitted. The site is purely a learning tool.
The demo site is updated in September each year to show the upcoming year's form.
https://fafsademo.test.ed.gov/webdemo.htm#TestDataCurr

https://fafsademo.test.ed.gov/spa/fafsa/