If you have a camera and press the button, you're a photographer. If you'd like to become a professional photographer, or a good photographer, that's an entirely different thing. There are plenty of certifications and courses you can take, but most of them just mean you crossed all the items on some checklist and you are a technically proficient photographer, not that your work is especially interesting or noteworthy. To get there takes time and lots of practice, not necessarily schooling.