How do I apply for a STEM OPT extension using my I-20 form?
You must first submit a STEM OPT extension application to USCIS through your designated school official (DSO) before the expiration date of your current OPT.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How do I apply for a STEM OPT extension using my I-20 form?

### Input: Not applicable

### Response:
You must first submit a STEM OPT extension application to USCIS through your designated school official (DSO) before the expiration date of your current OPT.<|im_end|>