First, you can receive more formal basic training in the chef school, with the guidance of teachers. It doesn't matter if you are wrong, you can come again. Hotels can't. When hotels are busy, the master usually doesn't have enough time to take out the faculty and staff alone.
Second, in the chef school, you can systematically and comprehensively learn the basic principles and methods of cooking, such as burning, frying and sliding, and practice them. Students have a solid basic knowledge in school. After graduation, they can better see the works of masters, make their eyes more vivid and make technological progress faster.
Third, a good cook is not equal to a good teacher. Knowing "teaching" is the key. There are many skilled teachers in the hotel, but the school teachers are not only skilled, but also trained in pedagogy and psychology and know how to "teach". The school will also organize the study of popular dishes and innovative dishes to make students more in line with social requirements.
Fourth, the chef school has established long-term cooperation with chain hotels and guesthouses to send talents to them. After graduation, it is easier for students to find a hotel that suits their type.