Abstract Cross sections or effective collision strengths are compiled for electron-impact excitation of helium atoms and He-like ions. An evaluation is made to identify the “best” determined values for use for the transitions 1 1 S−2 1,3 S and 1 1 S−2 1,3 P of target ions of Z = 2, 3, 6, 8, 12, 20, 22, 26, 28, 34, and 42. The resulting evaluated data are fitted to an analytical formula to generate a set of recommended values. The fitting coefficients are given in a table; the rate coefficients calculated therefrom are shown graphically. The reliability of the recommended data is estimated roughly.