I went to a cooking class last night. We made ravioli.
I couldn’t eat it bec it wasn’t kosher. Even according to yitayningwut. (It was bishul akum, and had gvinas akum in it).
I just made them-i didn’t cook them. The akum boiled them and then fried them in some butter.
We also were able to make mozzarella cheese, gnocchhi, and tiramisu.
To (not) answer your question, I don’t know any kosher baking schools, but there is a kosher culinary school in crown heights or somewhere. You can also go to a non kosher one, with certain restrictions. But for a baking school it should be easier.