“Five years can be achieved by taking two eligible classes during one academic year or taking a college course.”
seems fairly well articulated to me.
“ Cal Poly will give consideration for course work taken in seventh and/or eighth grade.”
and
“ Cal Poly recommends applicants complete two years of advanced math courses such as trigonometry, pre-calculus, calculus or statistics for greater chances of admission.”
Is a fair bit more than just saying “five years”.