In a similar boat. I decided I wanted to actually learn spanish, so a couple months ago I got serious about watching Comprehensible Input (Dreaming Spanish). Between that and self study and speaking practice I'm already well past where I was in high school, though I still have a long way to go to fluency.
It's frustrating that I have to find this all out years after my education. But I feel that way about most subjects I learned in school, so this is no different.