"Tracking Sorts by Ability Alone"
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
Reading tracking as pure ability-sorting ignores the self-fulfilling prophecy: placement shapes the expectations a student then receives.
Show
Two students of comparable measured ability placed on different tracks in the same grade diverge in later coursework as each track's expectations take effect.
Watch for
The dispute is not whether ability varies; it is whether placement measures ability or produces the gap it claims to reflect.