Energy spectra of electrons between 1 and 500 eV have been obtained at altitudes mainly below 300 km over both north and south high-latitude regions regions with the photoelectron spectrometer experiment on the Atmosphere Explorer C satellite. Although the high-latitude fluxes of 1- to 500-eV electrons are highly variable, it has been possible to organize the observed events into four major classes: (1) fluxes of electrons having a peak in energy below 100 eV, approximately isotropic over the upper 2&pgr; hemisphere, and located at high invariant latitudes on the dayside which apparently gain access to the ionosphere through the dayside magnetospheric cusps; (2) structured fluxes of electrons showing one or more discrete but variable peaks in energy, reminiscent of 'inverted V' phenomena at higher energies, observed at all magnetic local times; (3) fluxes which a monotonically decreasing differential versus energy dependence proportional to E-&agr;, where E>30 eV and 1<&agr;<2, characteristics of auroral secondary electrons; (4) intense fluxes of electrons with rapidly changing and random energy spectra, characteristic of passage through auroral arcs or breakup regions. Fluxes of types 3 and 4 depend on precipitation of high-energy auroral primary particles, while those of types 1 and 2 appear to be a consequence of fundamental processes which couple the magnetosphere and the ionosphere. Detailed data are presented on classes 1 and 2, including occurrence and location as a function of magnetic activity.