I got a few ques that I want to ask regarding JC. Someone help me thankyouverymuch

What time do JC normally starts and end school? (Esp MJC)
Is Econs H2 hard?
If get B3 for HMT o levels, should I drop cl in alevel or should i continue?
Disadvantage of continuing and not continuing.
When is the first day of school for JC? I mean like after you got ur o level result.
What is the most impt thing to look for when choosing JC?
Is it wise for a 5 points scorer to go to a 9 point school?

THANKYOU ONCE AGAIN