The quality of one's teachers refers to the level of expertise, knowledge and ability that a teacher possesses in their respective field. It is an indicator of how well-equipped they are to impart knowledge and educate students effectively. The phrase implies that good teachers have strong subject knowledge, effective teaching methods, and high standards of professional conduct. A higher quality of teachers can lead to better learning outcomes for students, as they possess the skills necessary to engage with their pupils and provide them with a solid foundation in their chosen field of study.