In addition to all other power and authority which may now be vested in the governor of the State of Mississippi by its constitution and statutes, or either, and any power or authority which may be vested in him by common law as governor as such, the governor of the State of Mississippi is hereby vested with the authority to close any one or more or all schools in any school, agricultural high school, or junior college district, or to close any institution of higher learning in the State of Mississippi when, in his discretion, he determines such closure to be to the best interest of a majority of the educable children of any public school district, or to the best interest of a majority of the children or persons eligible to attend any agricultural high school or agricultural high school and junior college district, or to the best interest of any institution of higher learning, or to the best interest of a majority of the persons or children enrolled in any such school or schools, or any agricultural high school or agricultural high school and junior college, or any institution of higher learning. The governor as such is also vested with such supplemental and additional authority to close any one or more or all of said public schools in any such school district, or agricultural high school district, or agricultural high school and junior college district when, in his discretion, he determines such closure will promote or preserve the public peace, order, or tranquility of such district or districts and as such governor he is also vested with the authority to close any one or more or all of said institutions of higher learning when, in his discretion, he determines such closure will promote or preserve the public peace, order, or tranquility in and of such institutions, or the community in which such may be situated or in or of the State of Mississippi.