A good education system has certain qualities.
Firstly, a good education system helps the learners to become curios. Then it helps the learners get ideas on how to satisfy that curiosity on their own. It doesn’t purport to give learners all the information they need. It builds the foundation for lifelong (self-motivated) learning.
Secondly, a good education system helps the learners to acquire certain practical competencies. A good education system doesn’t just focus on the theoretical stuff, leading to information overload. It also has practical elements: where students are taught how to do things. A person who has gone through a good education system can write a letter sensibly. A person who has gone through a good education system can dress sensibly, as occasions demand. A person who has gone through a good education system can draw a budget and actually stick to it.
Thirdly, a good education system has equity. It doesn’t discriminate against the poor: such that the poor end up getting one quality of education, even as the rich get another quality of education. Of course, we have some education systems that operate in this way. The end result is usually the perpetuation of poverty: as education would otherwise have been the only sure path to upward mobility.