1. The controllers of funds are different: the funds of primary schools directly under the Education Bureau are directly controlled by the Education Bureau without any intermediate links. The funds for non-directly affiliated primary schools are basically government financial allocations, and there will be many links in the middle.
2. Different sponsoring departments: Primary schools directly under the Education Bureau are organized by the Education Bureau, and non-directly affiliated primary schools are organized by the government.
3. Different teaching resources: The primary schools directly under the Education Bureau have the best teachers and other high-quality resources that the Education Bureau can allocate. Compared with the primary schools directly under the Education Bureau, the resources of non-directly affiliated primary schools are not of high quality.