How was the problem resolved in Wednesday Wars?

There are a number of different problems that are part of
the plot in Wednesday Wars, and as I am not sure which one you are
referring to, I will address two that I believe are the most pertinent. First of all, at
the beginning of the book, the central character Holling thinks that his teacher, Mrs.
Baker, is out to get him. In the situation from which the title is derived, Mrs. Baker
is stuck with Holling alone on Wednesday afternoons when the rest of the children attend
religious education classes at the Catholic Church or the Jewish Synagogue. Holling
thinks that Mrs. Baker resents this, and is plotting his demise. This problem is solved
as, through her kindness to him and her challenge to him to really think about things
that are important in life, as inspired by the writings of Shakespeare, Holling begins
to grow in maturity. He develops the ability to see things from other perspectives
besides his own, and comes to see Mrs. Baker as an exceptionally caring and strong
individual who is deeply concerned with his
well-being.

Another problem in the book is Holling's
relationship with his father. Holling's father is controlling and unloving, and demands
unqualified obedience to his wishes without consideration of what his children, or his
wife, for that matter, want in any given situation. He is single-mindedly focused on
getting ahead in his business, and plans for Holling to follow in his footsteps. As his
awareness of his own identity in the world develops, however, Holling discovers that
what his father wants is not necessarily what he wants, and he fears that he will never
get the chance to determine his destiny. Happily, Holling discovers the strength,
through the support and affirmation of Mrs. Baker and others in his school community, to
stand up to his father, and take control of the direction his own life will take.
Holling's sense of self develops to the point that he is able to extend the love and
support he has received to others who need it; in particular, he finds a kinship with
his sister, who is similarly repressed by their father's domineering ways. The author
communicates the sense that both Holling and his sister Heather will rise above their
father's shallow value system and heartless control and become fully realized human
beings.