Our best computer networks teacher from secondary school decided to leave following complaints from parents, who believed that the tests were too difficult. As

Our best computer networks teacher from secondary school decided to leave following complaints from parents, who believed that the tests were too difficult. As I remember, about 3/4 of our class had a tough time. Honestly, the tests weren't all that hard. I suspect there was some crowd effect taking place, which resulted in people collectively giving up. This turned out to be a significant blow to the standard of our education. The subsequent teachers were neither as knowledgeable, nor as effective in teaching the subjects.