Reddit mentions of Chemistry for the IB Diploma: Study Guide (International Baccalaureate Course Companions)

My most work-packed subjects were definitely HL Math and HL Chem. I took computer science as an SL and that involved a lot of work, but I actually enjoyed that, so I wasn't that stressed out about it. Chem just seemed frustrating but I used a guide that the teacher recommended - I don't remember exactly what it was but it looked something similar to this. That being said, the teacher was great and now I'm actually a graduate student in chemistry. Math was frustrating because of the teacher and the book he used. In the end, I learned a decent amount, but definitely put a lot of work into it. It helped a lot with math classes in college though.

As far as languages go, it just depends on your school. Our school offered both Spanish and French, I took Spanish. If you do have questions about stuff like that, talk to your IB coordinator. At one point I decided that I would take English as my secondary language (English is not my native language), so the IB coordinator drew up a plan that took her like a week of how I was going to do independent studies of my native language, we were going to order books that covered the literature topics, etc. Eventually, she said, "Look, we can do this, and it'll take a lot of work or you can take English as your primary language and Spanish as your secondary and it'll be easier on both of us." I agreed with her and that's what happened - IB is stressful at that age as it is. If you have other questions, let me know, I'm glad to help as much as I can, though some of my information might be dated.