Regarding the tuition-free problem of Changsha Blue Sky Science and Technology School, we need to pay attention to the following points: Is the school legal? First of all, it is necessary to confirm whether the school has the qualification to run a school and a legal business license, and whether it is registered in the education department. Schools have no legal status, so their free promises may be unreliable. School publicity methods: Some schools may attract students through free or low-cost methods, but this method does not necessarily represent the teaching quality and strength of the school. Therefore, when choosing a school, teachers, teaching equipment and teaching management should be considered comprehensively. Whether the school's commitment is true: the school promises free or low-cost education, and needs to verify whether its commitment is true. We can get relevant information by visiting the official website of the school, consulting the enrollment teachers of the school, and communicating with existing students or alumni, so as to make more informed decisions.