In the present study, the researchers aimed to study the effect of Advance Organizer Model of Teaching on Science Process Skills, Academic Achievement and Scientific Attitude among the Higher Secondary School Students with different Levels of Intelligence. The experimental design was the post test only parallel group design. An instructional material was prepared using the Advance Organizer Model of Teaching. The sample included sixty six students of Second Year Pre University. ANCOVA was used for data analysis. The results were significant. The study has wide applications at the Higher Secondary level