Applying for opt

Hi, I recently converted my visa from h4 to f1. I need to apply for opt ASAP. I have got my f1 visa approval one month back. Do I need to be 1 year full time student on f1 to be eligible for opt. I have seen that this condition vary from school to school or is it decided by uscis.

appreciate your response, thanks in advance

In vast majority of cases, you actually need to finish the program to get post-completion OPT. You can get CPT, perhaps, but only shady schools will allow that so soon.

Were you a full-time student at this school while on H-4?

Yes I was full time on h4, converted to f1 during last semester. I am doing masters from a california state university so that’s accredited too.