It is not mandatory for kids to have their own recorder. They can use one of the school's recorders in class and in break time. However, I will no longer allow children to take recorders home, since many got lost last year. That's why this year I will be selling recorders in class for 100k vn. I do not make a profit from the sales and do this only to help.
There are also many different recorders for sale in Hao Nam Street for those who prefer to buy alone. It's worth noting that the recorder used in class are tenor in the key of C.