They may have been exposed to great teaching, but do they recognize it? Asking people how they feel about the learning without an objective criteria to measure their performance could be a recipe for a local maximum.
They don't need to for it to affect attendance. You stick around when you find something captivating and skip that which you find dull. And something that was captivating twenty years ago compared to the other content that was available at that time might be dull compared to today's content. Teachers can't expect styles and material from decades ago to just work like it used to.
