All of this causes of consequence show us the reality about why students prefer more video conferring than school, with your personal teacher you can ask over, and over again no matter what; he/she know that you are the only student so, in the school you can ask about over ad over again but it's not the same, there are more students and you teacher just have approximately 1 hour with 30 minute just for one subject, i think it's not enough time to learn.