For rural school assistance grants to cities, towns, regional school districts, county agricultural schools, independent vocational schools, charter schools or collaboratives to increase regional collaboration, consolidation or other strategies to improve the long-term operational efficiency and effectiveness of public schools; provided, that in awarding such grants, priority shall be given to proposals that support schools and districts that have experienced, or are experiencing, significant enrollment losses that jeopardize their long-term fiscal health and ability to offer high quality educational programming