DaasYochid – Im Kain, “we as in Gedolei Yisroel” should be prioritizing children’s tuition (which after all, is the halacha as brought in Shulchan Aruch) over all of these other Tzedakos, so that children have a place to learn. At least Rav Pam & Rav Aharon who fought for Shuvu & Chinuch Atzmai (resp.) were consistent in their requirements for Jewish education. Today, we see the “popular” Tzadakos (such as Kupat Hair, Keren Shviis and adopt a kollel) take precedence. If it really is Pikuach Nefesh, paying children’s tuition would be a priority of the Gedolim. It is not.
P.S. This is entirely consistent with the world-view of many Gedolim (following Rav Dessler), that they would rather support Kollelim and let the children go off the Derech, given those are the only two options. I’m not saying it is wrong, but it does go back to spending yenem’s money while your own priorities are elsewhere.
P.P.S. Meheicha Teisi that pikuach nefesh would apply here? Perhaps it only applies when the child will (rightfully) reject Yiddishkeit because it rejected him/her, not where you have someone well adjusted and well behaved who will now learn at home?