First of all, now I look at some schools in my own area online and find out those with good reputation. Although the online news is not credible, if there are many negative things, there may be problems.
Next, take a look at the syllabuses of these schools in official website to see whether their courses cover all-round industry knowledge and whether the courses are updated in real time. There is also whether the course has practical links besides theoretical knowledge.
After such screening, you must have identified several candidate schools, and then you need to go to the field and attend the school's audition class directly, so as to clearly show the real class quality, classroom environment and atmosphere of the school. Secondly, you can ask your old classmates directly to find out the true reputation of the school.
If you really find the right school, then devote yourself to it. As long as you have paid, the UI design industry will not let you down.