Some years ago, John Dubie, then a high school senior in Vermont, posted a very personal, autobiographical blog entitled “Big Picture Saved My Life.” John meant that statement literally—the Big Picture curriculum and program at South Burlington HS was the thing that kept him going when he was thinking about checking himself out.

I was stunned by the aftermath of the piece, which was picked up, reprinted and dissected in a number of other blogs. I was especially surprised by those commentaries that suggested John’s life was saved by leaving traditional public school.

The irony? Dubie spent much of the blog describing the first eight years of his education in a Catholic school, where he was generally seen as a disruptive loser by the faculty. And– the Big Picture Learning program he credits with making all the difference was housed in a traditional public school, in Burlington, Vermont,

Because I was the person who suggested John tell his story in public, this re-interpretation of his autobiography made me see red. I said as much, in the comments, noting that his generosity shouldn’t become a cheap excuse to slam public education again. I said: What I’m worried about here is protecting a young man who graciously shared a deeply personal reflection having his story–and his face– used to promote the idea that public education sucks.

The response I got: Seriously? Of course public education sucks.

Do public schools suck? Is that the conventional wisdom, the reflexive, global response these days? Do we have to start with the conviction that public education has failed, before we can transform or improve, regenerate or revitalize a fully public system?

I say no. In fact, the best time to change public education is now, while its strengths, resources and merits still exist.

What questions should we be asking about public education, before reflexively tearing it down? What facts shape the argument that public education, as a concept, is well worth saving?

• All governance models–public, chartered, independent, parochial—have produced exciting schools and disastrous schools. There are plenty of students who thrive under direct-instruction, highly structured, traditional content-delivery models. And others who learn best through self-directed exploration of ideas and subjects that interest them. There is no one best way to learn.

• Public education remains the Big Kahuna of governance models in the U.S. Why would you tear down the considerable and historic infrastructure of a system that has educated–however imperfectly–generations of (successful) Americans, instead of updating it, repairing its cracks and flaws and outright malfunctions? Other nations have retrofitted their public systems, using both research and imagination. Why wouldn’t we?

• When and where public education is not meeting the needs of students, why is that so? Public education has been radically re-shaped in the last two decades, driven by “reform” policies and experiments that clearly aren’t yielding the expected results (and that’s a very sanguine assessment). If public schools suck, we certainly haven’t found the magic formula to fix them. Probably because the answers involve hard work, multiple strategies and serious investment.

• Public education is the only “choice” when other options are exhausted, so public schools are filled with our poorest children, those whose parents cannot provide transportation or uniforms or help with algebra homework. Some of those schools are creatively addressing problems, building communities and family relationships, persisting even if testing data remains low. Do they suck?

• Who’s saying that public education sucks–and why are they saying it? For some parents, the fact that their child doesn’t get a custom-tailored learning experience or enough attention is reason enough to believe that all public education is substandard. For others, there is a knee-jerk assumption that the only good education is a series of competitive-admission, high-ticket private schools. Much of the anti-public education drumbeat springs from a politicized, media-fed conviction that public schools have failed, based on testing data alone. You have to ask: What’s in it for the most vocal and persistent public school critics?

• You don’t really know what a particular school or classroom is like until you’re there. We’ve all read the polling data that shows parents generally think the schools in their community are pretty good; it’s the schools in other places–scary urban places, or maybe just the next district over, or public schools across the nation–that are terrible. I’ve been in plenty of classrooms in Detroit Community Schools where there was order, curiosity, learning–and joy (and usually, about twice as many kids as there should be). In the middle of poverty, there are pockets of triumphant accomplishment.

Shouldn’t we be shoring up public education, as America’s best idea? Shouldn’t we be investing in repair, enhancement, innovation? Let’s stop with the facile pronouncements on the failure of public education–they reveal failure of imagination and democracy.