I'm surprised Kahn Academy hasn't been mentioned. It's free and from my experience pretty good. Though I'm not a parent or teacher so I can't speak from either of those viewpoints.

▲

mtts 6 days ago | parent [-]

Khan Academy last I checked went up to High School. MathAcademy goes up to undergrad math.

▲

windows_hater_7 6 days ago | parent | next [-]

The last I checked, most high schoolers don't take Diff Eq classes.

https://www.khanacademy.org/math/multivariable-calculus https://www.khanacademy.org/math/differential-equations https://www.khanacademy.org/math/linear-algebra

▲

darkstorm2150 6 days ago | parent | prev [-]

High enough for you ?

https://www.khanacademy.org/math/calculus-2

	▲	mtts 6 days ago \| parent [-]
		I stand corrected. Can’t edit my original post, though. Khan hides it well, though - it’s listed smack in the middle of sixth grade math and high school math courses. I skimmed through the list (again) and found some college math but not all. Maybe this is a new offering?