Don't underestimate it. For many people they at least learn how to read in Hebrew (to read from the Torah). Then they get a pair of Tefillin which is itself a great plus. Even if its for show and for other people (which still no one does that 100%, and they at least have some % Lishma) its still very good becvause they get the Tefillin, get the Tefillin and then at least the child has the opportunity to then choose his path. If he wants to put on the Tefillin he already has a pair available etc. Also even if to come to shul at that time and hear the prayers, answer Amen etc. that's a big gain in of itself.