The name on my birth certificate is different from my preferred name, so I requested all my university instructors to call me by my preferred name. I prepared printed letters but also spoke with them personally. It generally wasn’t a problem. Be confident but respectful. Here’s a sample letter you can send your teacher:
[Instructor Name. If unknown, use “To whom it may concern”],
My preferred name is [Your Preferred Name], and I use [/] pronouns. All my emails, assignments and exam papers will be under this name, but the grades you submit should be under the name in the school system.
For your reference, my Student ID number is [ID #].
[Your Preferred Name]
Should you explain that you’re transgender? It’s completely up to you. I did.