Ontario made a great first step in supporting eCampus Ontario's Open Textbook Library (https://openlibrary.ecampusontario.ca/) that provides over 200 free, shareable, online textbooks for PSE students and faculty to use.
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Make completion of the grade 11 course a requirement for the OSSD.
Link to curriculum: http://www.edu.gov.on.ca/eng/curriculum/secondary/2009science11_12.pdf
Forgive student loan debt so graduates can get to work and build their lives, not have to pay back loans for tuition that's now largely free for the current cohort of students.