Montgomery County Public Schools (MCPS) in Maryland has made progress on the dual dimensions of excellence and equity for its 140,000 students, about half of whom are black or Hispanic. Beginning in 1999, with the leadership of Supt. Jerry Weast, MCPS managed to boost the achievement of its top quartile of students while the lower quartiles improved even faster. The article delves into the six lessons that MCPS learned during its decade-long quest for equity and excellence.