An estimated 200 people stood squinting in the brilliant, hot sun Sunday afternoon, and watched Gordon Kelvin White and Robert Eldridge White Jr. raise the United States flag slowly to the top of a tall aluminum flagpole set in front of the new Martha’s Vineyard Regional High School. Before that Rev. Thomas H. Lehman had offered a short prayer; and after that, Mrs. Wilfrid O. White merely spoke the words that were inscribed in the base of the flagpole she had given the school, and on which her grandsons had run up the flag.