In recent years, the Isle of Man has introduced a new quality assurance (QA) mechanism for schools, featuring an inspection element called "external validation." As an Executive Headteacher overseeing Dhoon, Laxey, and Willaston Schools, I have firsthand experience with this system. This blog provides an in-depth look at external validation, comparing it favorably to the OFSTED regime in England, and reflecting on its impact on my schools.