Cultural studies. My anthropology teacher and her assistant had a thing for Freud and Lacan and I got into it. Plus lacanian school is very strong here in Slovenia (Slavoj Žižek, Mladen Dolar, Miran Božovič, Rado Riha - all international figures).
I attended a course Structuralism and Psychoanalysis held by Mladen Dolar. In an interview I once had with him he said they (people mentioned above) read all that was to be read and beyond and after a while it became obvious that Lacan was the one who went the furthest as far as human psychology goes. He developed concepts that allow us to understand things that are left floating freely with other authors or they deliberately ignore them in order for their work to hold water. Lacan is a tough nut to crack, full of paradox and unpleasant truths, plus he's absolutely user UNfriendly. Reading earlier works of Slavoj Žižek (only in Slovene, sorry
) helps heaps. If you are interested, Jacques-Alain Miller is the author who explains Lacan with unbelievable ease and clarity. These folks are dedicated beyond belief.
Oh, and highschool is definitely too early for Lacan, unless you're psycho. Like Žižek, I read some stuff he wrote when he was 17 about heideggerian philosophy and I was just "fuck, man". He gets stuff immediately, it's like perfect pitch in music, you hear a sound and you know the pitch. He reads a book and knows the concepts, the flaws, the big picture, the inner paradoxes, the ideological constructs ... crazy, I love him. He's a compulsory writer, he writes one book a year, sometimes two.
By the way, did you see The Pervert's Guide to Cinema with Žižek? Amazing documentary!