R' Daniel Eidensohn asked:
> Is it was preferable to encourage a person to stay in a
> non-Orthodox day school or let them go to public school.

There are *SO* many variables here that I cannot imagine how this is 
a suitable question for public discussion. (Unless, perhaps, what RDE 
meant to write was, "When considering these options, what factors 
should be investigated?")

There is such a wide variation of philosophies in what passes 
for "non-Orthodox". There's even a wide variation in what is 
called "Orthodox"! There's also a wide variation among the 
environments one would find at this public school or that public 
school. Not to mention the wide variation of the children themselves; 
some can cope with this better, and some can cope with that better. 
And the services offered by the schools; it's not inconceivable that 
the day school can deal with slow (or advanced) students better than 
the public school might.

First one needs to analyze these questions -- and the many others 
that I didn't think of -- and see how they relate to the schools and 
to the child. THEN you can start to evaluate the better and worse 
options.

On a more personal note, I'd say that if I were ever in such a 
situation, I would be willing to follow Rav Soloveitchik, and 
sacrifice my Mitzvas Tekias Shofar rather than support a mixed-
seating shul by standing outside it to hear the shofar. But the OP, 
as posted, seems to include a hava mina that RYBS's psak might go so 
far as to suggest that I'd consider sacrificing my child's -- or 
someone else's child's -- chinuch in order to avoid supporting a non-
Orthodox day school. And I, for one, am not willing to consider that 
option.

Akiva Miller