Lipscomb Academy according to their website is the largest private school in Middle Tennessee. Not sure of the total enrollment in grades 9 through 12 but much larger than Ensworth, BGA, MBA, etc. By the way Ensworth has approximately 400 students in grades 9 through 12. Not sure your analysis is correct. Lipscomb Academy would be in the large private school division with BA, MBA, FRHS, McCallie. Ensworth falls in the lower division but plays up in the larger division. Not sure there would be more than two divisions if the split occurs.