  We formulate AdS_2 higher spin gravity as BF theory with fields taking values
in sl(N,R) algebra treated as higher spin algebra. The theory is topological
and naturally extends the Jackiw-Teitelboim gravity model so as to include
higher spin fields. The BF equations linearized about AdS_2 background are
interpreted as describing higher spin partially-massless fields of maximal
depth along with dilaton fields. It is shown that there are dual metric-like
formulations following from the original linearized BF higher spin theory. The
duality establishes a dynamical equivalence of the metric-like field equations
that can be given either as massive scalar field equations or as conservation
conditions for higher spin currents.
