My presentation will focus on some of the latest results of the neutron spin physics program at Jefferson Laboratory in Hall A using a polarized3He target. This program includes several completed experiments in which the spin structure functions of3He were measured. The covered kinematic regions were these measurements were performed include the lowQ2resonance and inelastic regions and the highQ2deep inelastic region. These experiments offer a ground for testing our understanding of the strong regime of quantum chromodynamics (QCD) through the determination of the neutron spin‐dependent structure functions and their moments. © 2004 American Institute of Physics