http://allinonehighschool.com/full-curriculum/spanish/spanish-1/
Not sure if this is truly high school level, but I saved this bookmark as a possibility when dc are much older. It has a lesson for each day, links to videos, and lays out what to do for each day’s assignment. I may go through it in my spare time to get ahead of my kids’ Salsa Spanish lessons. We are only beginning with a 6&8 year old, so again I have no idea if this lesson plan is up to par for high school credit. But being that I learned very little in 2 years of public high school Spanish, I am certain doing the linked online course will be better than a subpar high school classroom course.