Wave functions obtained in previous shell-model calculations [1,2] for states of nuclei with masses A=10-15 are used to calculate logft values and spectroscopic factors. These wave functions, which were based on a modified surface delta two-body interaction, comprise the following active shell-model spaces: the lp3/2 and lp~/2 orbitals for mass 10 14 nuclei and restricted combinations of the lpl/2, 2Sl/2, lds/2 and ld3/2 orbitals for mass 15 nuclei, leading to four different calculations in the latter case. The calculated results support evidence that the modified surface delta interaction is a valid approximation to the effective interaction in light nuclei.