Also, the perception that someone who is good at math isn’t good at writing isn’t true. It’s the same kind of thinking that infers that people who are intelligent are also scatterbrained. There are many for whom skills vary a lot. And cross right brain to left and back. Artists who are mathy, writers who love science, history students for whom science is a breeze. As many combinations as humans. There are often threads on CC which debate the merits of STEM. Honestly, your kid at this age has strengths and weaknesses but can likely still pursue a lot of subjects. Don’t burden them with linear thinking regarding what they are good at and what they aren’t.
Make sure the school fits, has the subjects your kid likely wants to take and will allow your kid to thrive in MANY areas.