Abstract: The study is intended to wards investigate parental involvement, teachers support, and achievement motivation as predictors for students academic performance. This study employed quantitative research design. For the study 10th and 12th grades students selected because they were candidates of standardized national examination for 2013/14 academic year. Purposive sampling was used to select two schools, Sheiy Benchi and Mizan Teferi secondary and preparatory schools from Benchi Maji zone. We selected these two schools purposely because preparatory schools are found only at these schools. And then Stratified random sampling method was used in selecting study participants. Strata were made based on sex and field of studies (social science and natural science) particularly for grade 12th. Hence, based on the proportion the required number of sample was drawn from each stratum.