Please accept this request to cancel my current application for F-1 Optional Practical Training. Said filing is therefore voluntarily withdrawn.Respectfully submitted,. Signature. Sample Refusal (Opt Out) Letters. This page has links to opt out letters for the tests New York STATE gives to 3rd-8th graders every spring. The cover letter will also be sent to the employee's Department Director. You are responsible for completing all applications and forms accurately and submitting them to the SFAS Office correctly and on time. I am writing to request withdrawal of my application for Post-Completion OPT as I will not be able to use my Optional Practical Training at this time. Click on the link(s) for the forms you'd like to download. You can download our sample letter in PDF form here: Notification of Intent to Withdraw a Student.