Was just writing this to hopefully gain some feedback. I am currently studying at school and I wonder if learning a new language would be too difficult and result in me losing focus on my work. I try very hard at school and near exam times it can be stressful as it is. I have currently just finished my exams but I am set for another even harder year. Would it be too stressful as I am intrigued to learn Spanish.
It depends how much schoolwork you currently have. Since it is almost summer you might have some free time unless you take classes over the summer
I think it also depends on what you expect from your language studies. If you just take it easy, as a hobby (that's what I do), then you can skip a few days or even weeks of language-learning and just focus on your school activities.
I think this is not a race. ;-) I love learning new things, but if it gets too stressful, then I can move on more slowly. No problem at all. You should just ensure that school always comes first.