Students across Somerville are settling into a new school year. Just a few weeks ago they (nervously, excitedly, or even begrudgingly, I’m sure) returned to the classroom. They may or may not know they returned to a district that has been steadily racking up achievements and accolades in recent years. To name a few, on the 2016 MCAS, Somerville was the state-leading urban district for growth, the Brown School earned the prestigious Commendation School Award for outstanding growth, and Somerville High School remained the only Level 1 urban high school, a distinction they’ve held for the past four years. We should all be proud that our schools are on an upward trend. But we shouldn’t be complacent. These successes didn’t happen overnight.