while disconnecting home values from school districts even somewhat could make them more affordable.

while后接主谓结构，可以把while分析为并列连词，表示对比。也可以分析为从属连词，引导对比状语从句。

disconnecting home values from school districts 为动名词短语作主语，

even somewhat 为程度状语，

could make them more affordable 为谓语动词+复合宾语。