The problem with the school calendar is the disruption that we experience particularly the inclement weather. In a tropical country like ours it is common for classes to be suspended when the rains are pouring on the night before because flooding is expected. The teachers would usually complain during the rainy season that they have been losing about 10 days to the bad weather and that they needed to hurry up with the lessons. That is logical because we cannot control the weather. My suggestion is to harness the internet for purposes of continuing the teaching even when classes are suspended.