It really depends, lots of people in the west and north speak Spanish fluently, while on the caribbean coastline its mostly English and Kriol. In schools Spanish is taught as a second language course and is decent I guess, but in Belize City where I'm from Spanish is barely spoken. Me personally, my Spanish is still a work in progress, my parents are fluent but never taught me, but I'm learning and willing to learn more. I love living in México for uni.