Abcd: Wrong. The biggest increase in cost will not be electricity or utilities. It will be the increased wages to the teachers who will be asked to stay longer hours. That will have to be paid for by the parents.
If the teachers don’t get paid extra for the extra hours (5% more hours per year is a 5% increase in salary to ALL affected teachers and other school employees needed during those additional hours and/or days), by the school increasing parental tuition to FULLY cover the additional wages and utilities, it will never happen.
Period.