Most traditional models of academic motivation focus on a small number of specific factors. However, the Student Motivation and Engagement Scale (MES) (Martin, 2007b) includes a fairly comprehensive range of perspectives on general student motivation. The current study set out (a) to provide an independent test of the proposed 11-factor structure of the MES for boys and girls when (b) applied to high school mathematics in Australia (N = 1014; Years 7 to 11). It also examined (c) the covariation of different facets of motivation and engagement with gender, year level, and scholastic achievement. The hypothesised 11-factor model fit reasonably well across gender, and there was clear evidence of specificity to maths compared to English achievement. Some gender and grade effects were observed as well. The study provides support for the value of the Martin model and its instrument. It also extends our knowledge of student motivation to mathematics in Australian rural high schools. (Contains 6 tables.)