Noting that the nation is in the midst of a dropout crisis that will cost more than $3 trillion in lost wages over the lifetime of the 12 million students projected to drop out over the next decade, "Prioritizing the Nation's Lowest-Performing High Schools" calls on federal policymakers to perform "legislative triage" by devoting attention to the lowest-performing high schools and immediately improving or replacing the most severely "injured" schools. It points out that the nation's lowest-performing high schools may be diverse in size and geographic location, but most all of these schools disproportionally serve low-income students and students of color. An appendix is included. (Contains 7 footnotes and 10 endnotes.)