Leftover thoughts while pondering who’s better at balancing their check book, Curt Schilling or the guy who counts attendance at Fenway Park.

• The Celtics are becoming increasingly frustrating as the playoffs unfold, which is saying something for a team everyone had written off two months ago and now has its best scorer suffering from a bad knee, its best shooter gimping around on two bad ankles, and its best perimeter defender using silly string to hold his left shoulder together. Both losses to the 76ers were simply the result of complacency and arrogance. One would think they would have played with a greater sense of urgency in the second half of Game 4 knowing they could finish off Philly by Monday and get a much-needed rest.

• If the Celtics do somehow win it all, and if Kevin Garnett continues to play like he has in the playoffs (Friday night’s performance aside), No. 5 should be raised to the rafters someday. Some think he doesn’t qualify because he hasn’t worn the green long enough. But there are are already numbers hanging from the ceiling for several players who had far less of an impact on the franchise in slightly longer stays. Garnett changed the culture of a franchise that had been little more than the Atlanta Hawks of the northeast for nearly two decades before he arrived.

• The Maine Principals’ Association’s football committee will be meeting May 30th to continue discussion on the four-class proposal. It’s been two years since the MPA last considered expanding from three to four classes, when the proposal was ultimately tabled because a few schools couldn’t set self-interest aside. Last month, the committee started working on a new plan that reportedly is very similar to that considered in 2010 but wanted to wait until current enrollment figures became available this month before making a more concrete proposal. Whatever the committee draws up, it will still have to jump through a couple of more committee hoops before the full membership gets to vote on it, likely in April, 2013. It would be stunning if a four-class system isn’t in place a year from now. The current three-class system is rife with competitive inequities, and despite the minor adjustments made last year, it’s getting worse.

• I have to admit, though, I’d be even more stunned if Bobby Valentine is in Boston a year from now. Granted, it is entirely possible that Red Sox ownership has their heads buried deeper in the sand than the MPA’s membership. But Valentine and Boston are clearly not a good fit. And give me a break with the “the crummy pitching isn’t his fault” defense. Grady Little had a quicker hook.

• Everyone told us Adrian Gonzalez would tattoo the Green Monster when he got to Boston. What they didn’t tell us was Carl Yastrzemski could have played one of his Wall balls and nailed him by half a step at first.

• The Los Angeles Kings are having one of those unlikely runs that sets the NHL playoffs apart from all other postseasons. A No. 8 seed has never dominated like this. They’re 11-1 going into Sunday. That’s the kind of march Gretzky’s Oilers used to go on. The NHL would probably like them to cool down a little in the finals, however, especially if they encounter the New York Rangers.

• I have no idea if sixth round draft choice Nate Ebner has any chance to make the New England Patriots. I do know that after watching his Ohio State rugby highlights that I’ll be watching the normally unwatchable third and fourth quarters in the preseason to see him on kick coverage.

• The Miami Heat would be a better matchup for the Celtics in the next round, but it’s impossible to root for them. It’s too bad because the prospect of the Celtics facing the Indiana Pacers is more frightening.

• With the Red Sox as unlikable and unwatchable as they are, MLB.tv is a Godsend. Staying up late to watch the best player in baseball, Matt Kemp, and a spunky Dodgers team with Vin Scully behind the microphone is a true pleasure. And it doesn’t get any better than having Scully call the MLB debut of Bryce Harper in the Game of the Year so far. Between watching the Dodgers and Harper and tracking Mainers Ryan Flaherty and Charlie Furbush, this summer might not be so bad.