Clue: Leading theatre school not right to withdraw course for West Indians (6,3)
Answer: PEPPER POT
Explanation: Definition: course for West Indians
 **Reversal of**(… to withdraw) [ TOP(leading/first) + REP(short for "repertory"/theatre, the collective noun for plays, operas or ballets) + "prep"(short for "prep/preparatory school", a private school for children up to about 13 years old) **minus**(not) "r"(abbrev. for "right") ].
Defn: A dish served in various Caribbean islands/West Indies.