This is a myth. A common myth yet still unintuitively false.
I once reviewed statistical data for high school level success metrics across countries. It is statistically observable how small a correlation there is between class size and education quality
A good teacher can engage 50 students as easily as 500. Some of the best classes in my life have been in 200 people packed amphitheaters.
It's not about the class size, it's about the environment. Amphitheaters suck bad. A normal classroom is much better, and an online class is way better than an amphitheater.
I once reviewed statistical data for high school level success metrics across countries. It is statistically observable how small a correlation there is between class size and education quality
A good teacher can engage 50 students as easily as 500. Some of the best classes in my life have been in 200 people packed amphitheaters.