Do you know where your child will be going to high school, and have you heard anything about the relative strength of the language instruction there?
I'd have thought I want my kids to learn Spanish, but at our high school, the Spanish classes aren't as good as French and Latin, so I'd rather my kids learned one language well and added another (or others) in college.
Excellent advice. DS wanted to take Spanish in middle school, but is older sister told him that she heard more complaints from her friends about Spanish teachers at her high school than any other teachers. So, he took a language that was taught by an excellent teacher--the only one teaching that language. Unfortunately, that teacher left after his junior year, but her replacement was a good teacher.
Neighbor's child went with Spanish and she complained daily about how awful the Spanish teacher was, and the child had a different Spanish teacher every year. I don't know why, but the Spanish teachers were just awful. I would think it is different at every school.