There are no students studying bartending and DJ in vocational high school. Oh, I've never heard of bartending.
There are technical secondary schools or vocational high schools.
To learn this technology, you can only go to a vocational training school, so if you are in a secondary school,
If it is a vocational high school, then choose another major. You didn't say major. O(∩_∩)O~ I just learned to bartend, and I chose a professional bartending training school, but I learned it at Horizon Bartender School in Chengdu, not from Tianjin. Hehe, it's good. I learned it well, too. We can discuss it if you like.