@Ubertomusic
FSM Data and Cultural Stigma
It’s true that FSM eligibility statistics may underrepresent the actual number of disadvantaged students, as some families choose not to apply due to stigma. However, this limitation applies equally across all school types, meaning it does not explain why FSM eligibility is consistently lower in grammar schools than in non-selective schools in the neighbouring areas.The fact remains that grammar schools enroll a disproportionately small percentage of FSM-eligible students compared to comprehensive schools, which indicates a systematic selection bias—not just issues with data collection.
Comparing IQ Tests and the 11+
You’re absolutely right that IQ tests and 11+ exams are not directly comparable. However, this actually strengthens the argument against grammar school selection.
IQ tests, despite their flaws, are standardized, rigorously tested for reliability and validity, and have undergone multiple revisions to reduce cultural and social bias.
Grammar school tests, in contrast, lack transparency. There is no universal test, methodologies are opaque, and there is no strong scientific validation of how well they measure "innate ability" rather than test preparation, coaching, and socio-economic background.
The lack of clear data on test construction and validity means we cannot assume they are a fair way to identify "natural ability."
If they are not reliably selecting for innate intelligence, then what justification exists for using them to divide children at age 11?
IQ Heritability and Twin Studies
Research into IQ heritability is not inconclusive; rather, it is extensive and complex, with many studies showing that IQ is influenced by both genetic and environmental factors. Twin and adoption studies have provided some of the most robust evidence for estimating the genetic component of intelligence. However, even these studies acknowledge that environment plays a significant role, especially in childhood. This underscores the point that intelligence is not fixed and that early educational advantages (such as tutoring and test preparation) can significantly impact outcomes.
What Do Grammar Schools Actually Select For?
The reality is that grammar school admissions favor those who are already advantaged, making the process a filter for economic advantage rather than cognitive potential.
Even if we accept that some children from lower-income backgrounds do gain access to grammar schools, the system as a whole still functions in a way that reinforces educational inequality.
Should taxpayer-funded education be structured in a way that exacerbates inequality, or should we be focusing on making high-quality education accessible to all children, regardless of background?