Aldermen showed signs this week that they may not simply be a rubber stamp for Mayor Joseph A. Curtatone — as The Curtatone Opposition Party, also known as the Progressive Democrats of Somerville — have charged.

Ward 7 Alderman Robert C. Trane and Alderman-at-Large John M. Connolly, who was criticized as being insufficiently independent from Curtatone in his campaign win over Marty Martinez, have both previously worked closely and productively with Curtatone but showed signs of independence this week when they vigorously opposed the administration’s hints at selling the Powder House Community School. This willingness to challenge an administration policy is a welcome development for a body previously devoid of autonomy.

It is not that Curtatone needs to be opposed – he’s often done fine work even with aldermen waiting for his lead – but he has come to some of his best decisions when pushed by spirited advocates who can bring a new perspective. Alderman-at-Large Bill White has too often been the lone voice of dissent since Denise Provost left for the State House. We hope that, at least on some issues, he will now be joined by Trane and Connolly — who are on the money when they say the Powder House can be best used as a youth center than as an opportunity for some quick cash.