NEW YORK (JTA) — Last week, the Pew Research Center released the first national demographic study of Jewish Americans in more than a decade. Like all such studies, there are disagreements at the edges about the accuracy of some of the results, but the study’s most significant findings have been generally accepted.

The big news is that one in five self-identified American Jews does not identify as Jewish by religion (one in three among younger Jews), and that even among Jews by religion, the intermarriage rate since 2005 is 55 percent. Looking only at the non-Orthodox, since 2005 more than 70 percent of the marriages have been intermarriages.

The big question now is how funders and Jewish organizations respond to this data.

By itself, the news that one-fifth of America’s Jews do not see themselves as Jewish by religion might not be disastrous. After all, there are many Israelis who identify with the Jewish people who call themselves “secular.” The problem is that the Pew study found that unlike Israeli “chilonim,” most of whom see themselves as integral members of the Jewish people and actually perform more than a few Jewish rituals as a matter of course, American “Jews of no religion” are unlikely to raise their children as Jews, be attached to Israel, give to Jewish causes or see being Jewish as important in their lives.

One Jew of no religion who was interviewed for the study described himself to Slate this way:

“Six months ago I told a friendly Pew pollster that I consider myself Jewish but not religious, that my wife is not Jewish, and that my daughter is being raised ‘partially Jewish,’ in Pew’s terms. And as an intermarried Jewish nonbeliever, I think it’s time we anxious Jews stopped worrying and learned to love our assimilated condition — even if it means that our children call themselves half-Jewish and our grandchildren don’t consider themselves Jews at all.”

In short, most Jews of no religion have both feet out of the Jewish community — or at least are on their way to the exit sign.

The astonishingly high intermarriage rate among recent marriages outside of Orthodoxy is so important because according to the Pew study, nearly all children of two Jewish spouses are being raised as Jewish by religion, while only 20 percent of children of intermarriages are being raised exclusively as Jewish. Some of these couples are Jews of no religion and others are headed for the exits anyway. Others might be seen as having one foot within the Jewish community and one foot out.

So what to do?

Without offering firm policy recommendations, which should be carefully developed, here are initial principles:

* We should recognize the big picture. In the aggregate, the many programs developed by Jewish philanthropists and organizations after the 1990 population study that first showed alarming intermarriage rates have failed to stem the tide of assimilation. (It will be interesting to see whether the Pew study supports the contention that Birthright Israel increases Jewish identity and participation.) There is likely nothing that can be done to attract Jews heading for the exits, and the programmatic efforts should focus on those who at least have one foot still within the community.

* Based on the Pew study, at least in America, Judaism will endure across generations almost exclusively in families that identify with Judaism as a religion. (It is less clear to me what level of observance or participation generates a “tipping point.”)   The reasons are less clear, but I imagine that part of the answer stems from the famous Ahad Ha’am saying, “More than the Jews have kept the Shabbos, the Shabbos has kept the Jews.”

Or, as Rabbi David Wolpe wrote in his thoughts about the study:

“As a countercultural tradition in America, Judaism asks a great deal of its adherents. Judaism is a behavior-centered tradition. It is primarily enacted in a language strange to most American Jews [Hebrew] and requires an extensive education to understand its fundamentals. … That which is continually diluted will eventually disappear.”

* Along these same lines, we should measure the likely success of programs based on whether they offer the intensive and immersive education needed to give participants an understanding of the power and beauty of Jewish values and practices. Anything less will fail to give participants sufficient motivation to make the commitment of time, energy and money needed for engaged Jewish life. Programs that attempt to “meet people where they are” can only be justified if they actually succeed in attracting Jews to more substantive ongoing programs.

* Every business owner knows that it costs less to retain a customer than to attract a new one. While economic considerations may not be the only relevant ones, it is far more cost effective to invest in Jews who are closer to the core of the engaged Jewish community, whether they are children or young adults. The study tells us that these, too, are Jews at risk of assimilation. Investment in these young people is our community’s best chance for increasing retention of an energizing nucleus that has the potential to reverse the trends painfully evident in the study.

We all prefer good news to bad. This has caused some commentators on the Pew study to celebrate the number of Jews regardless of their commitments or argue that the answer is to be more “welcoming” of those who are heading for the exits.

There are no easy fixes. The only way to retain the next generation will be to inspire them to desire and love substantive Jewish life. If enough Jews can be so inspired, the Jewish future will be far rosier than the snapshot offered by the Pew study.

(Yossi Prager is the executive director-North America of the Avi Chai Foundation.)