I'm not sure why you haven't watch it but well come to think about it, high school story kinda to old for us maybe. But, in season 1 when i watched it, i was so bored and don't know what to watch. so here I am, still waiting for the next season..

Don't know about if it is no. 1 show in Netflix but the producer is Selena Gomez .Being the producer so... maybe its because of her too.