I am a high school student. I bought a pair of sandals like this. What do you think of those parents who think they are worn by primary school students?

I think it's ok. There is no difference between high school students and primary school students. If you buy it right away, you like it. It's nice to wear. Parents may just be talking. Most parents are willing to do so. Children want to comment on everything they buy, just like learning is also an example. Even if children do well in exams or make progress, there is always a sense of dissatisfaction, not an encouraging tone, and they have to dig a few words to be satisfied. So this is the kind of parents.