The controversial Khalil Gibran International Academy scheduled to open next month has attracted only a handful of Arabic-speaking students, The Post has learned. Just six Arabic speakers and one English-language learner out of 44 registered students have enrolled at the Brooklyn public academy that critics fear will become a city-funded Islamic school. "We didn't anticipate a full 50-50 split," said Department of Education spokeswoman Melody Meyer. The English-Arabic school was envisioned by Principal Debbie Almontaser as a multicultural institution serving grades 6-12 for native Arabic speakers and students wanting to learn the language. Students would become fluent in both languages...