  We classify indecomposable racks of order p^2 (p a prime). There are 2p^2 -
2p - 2 isomorphism classes, among which 2p^2 - 3p - 1 correspond to quandles.
In particular, we prove that an indecomposable quandle of order p^2 is affine
(=Alexander). One of the results yielding this classification is the
computation of the quandle nonabelian second cohomology group of an
indecomposable quandle of prime order; which turns out to be trivial, as in the
abelian case.
