A January 7, 2022 letter in The Wall Street Journal, "The Tragedy of 'Special Ed,'" insisting that these programs consign students "to a treadmill of failure," aroused my long-past memory. While doing psychological research in a Mid-West school, I sensed the similarity between a school and a factory.
Both operate on a rigid timetable where products (widgets or students) must move smoothly along the production line. With students this involves flowing without interruption from classroom to lunchroom to dismissal, with interference being removed. Thus defective widgets, or slowly moving/uncooperative students, are removed, with the latter being sent to Special Education to begin their struggle along the "treadmill of failure." The reason for this is simple: while academic failure can result from several reasons, it usually reflects psychological causation which schools, lacking sophisticated child development knowledge, are ill-equipped to remedy.