Hello Aspirant

I'm assuming you are a 12th-grade student who has appeared for their 10th grade and wants to take PCM with Computer Science.

Every school has different eligibility criteria for the science stream. For example, in my school, students who got an 8.0 CGPA (~76%) and above, were the ones who were awarded science stream. And if you have science as your stream, you can choose Computer Science or Information Practice.

Similarly, even your school will have some internal criteria in 10th grade for which you must ask your teachers.

Hope this helps