Many states have made performance standards the centerpiece of educational
reform. Unfortunately, school aid systems have not kept up. Most aid system
s ensure minimum spending per pupil instead of minimum student performance;
that is, they fail to recognize that the cost of achieving a performance s
tandard varies across school districts. This paper derives an educational c
ost index and incorporates it into an aid formula designed to bring all dis
tricts up to a performance standard. A district's performance can be moved
toward a standard through a property tax rate increase, an efficiency incre
ase, or increased state aid. In New York State, boosting efficiency to the
current "best-practice" level would not bring large city districts even up
to a minimal performance standard. In fact, these districts cannot achieve
such a standard without large increases in state aid and local tax rates, a
ccompanied by reforms that improve the productivity of teachers and adminis
trators. (C) 2000 Elsevier Science Ltd. All rights reserved.