The school my children attend have a no public library policy. There are Jewish libraries here which they can visit.
Since my children are huge readers I buy each one a book every Pesach, Sukkos, and Chanukah. We have a big collection by now. Just bought more shelving from IKEA to accommodate the overflow.
We also buy the heimishe weekly magazines.
I rather my children not have enough books then they should fill their heads with shmutz.