UVA的grade system explanation~~

两三三UID：3801612

想请问有木有UVA的前辈或者正在准备申请UVA的小伙伴，llm申请里有一个optional的材料是grade system explanation，我们学校top3法本，感觉没有必要再详细说明学校和老师是怎么给你分的了吧？不太懂，想请教大家~~谢谢！

CHENNEHCUID：4003474

"An official statement of class rank from the institution at which you earned or will earn your first degree in law. These should be submitted directly to LSAC in envelopes sealed by the appropriate school official who then signs or stamps across the seal. If such rankings are not provided by your school, provide a statement to this effect along with a detailed explanation of the grading system employed and a self-evaluation of your performance within that system."
官网上对这个grade system explanation的表述是没有排名的话则需要提供...
请问大家在实践中如何解决的呀？