Start with three questions
Which skill do you want to develop? How much time can you commit? What does your school programme and target university require? These answers make the decision concrete.
How the courses differ
CSA centres on programming with Java, CSP on broad computing concepts, and Cybersecurity on interpreting security risks. Do not assume one is easier for every student.
Discuss before committing
Ask about assessment, feedback, exam practice and frequency. Review a sample lesson structure. Discuss how skills will be tracked rather than relying on a promised result.