Mathematics Enhancement Programme- free curriculum for all ages
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This is a complete mathematics curriculum available free online, including printable practice books, lesson plans, and copy masters. It was developed for the UK, and goes from "Reception", which seems to be analogous to kindergarten in the US, up through year 11 (similar to 11th grade). There are 2 versions of the 10-11th year curriculum, only one of which seems to be for college-bound students. The collegebound version includes guidance for customizing the curriculum for advanced students. The version of the 12th year intended for collegebound students is not yet complete. The only part of the curriculum I can see that isn't freely available are the interactive online exams.
There are interactive workbooks complete for years 3 and 4 (i.e workbooks kids can use online that automatically check the student's work). Interactive tutorials for all concepts are available for years 7 and 8. Year 7's tutorials are here: http://www.cimt.plymouth.ac.uk/projects/mepres/book7/book7int.htm and Year 8's tutorials are here: http://www.cimt.plymouth.ac.uk/projects/mepres/book8/book8int.htm
This is a spiraling curriculum. The high school levels include algebra, trigonometry, probability, statistics and geometry, but they are not distinct courses.
