  Springer fibers are subvarieties of the flag variety that play an important
role in combinatorics and geometric representation theory. In this paper, we
analyze the equivariant cohomology of Springer fibers for $GL_n(\mathbb{C})$
using results of Kumar and Procesi that describe this equivariant cohomology as
a quotient ring. We define a basis for the equivariant cohomology of a Springer
fiber, generalizing a monomial basis of the ordinary cohomology defined by De
Concini and Procesi and studied by Garsia and Procesi. Our construction yields
a combinatorial framework with which to study the equivariant and ordinary
cohomology rings of Springer fibers. As an application, we identify an explicit
collection of (equivariant) Schubert classes whose images in the (equivariant)
cohomology ring of a given Springer fiber form a basis.
