FOR OVER SIX DECADES , the lexington School ’ s promise for generations of children is realized in the strength and purpose of its mission and philosophy . Over the past year , a group of strategic planners consisting of dedicated parents , past parents , board members , alumni , faculty , and administrators spent countless hours studying , discussing , and proposing the vision for the school for the next five years . to look forward , they focused on the enduring principles on which the school was founded , core values deeply relevant today and represented in the mission and philosophy of the school .