Emmanuel Christian School provides students with the opportunity to participate in formal ICAS examinations, covering Writing, English, Spelling, Science, Digital technologies and Mathematics. These examinations are internationally recognised and examined across the Asia Pacific region.

CANTA Mathematics, Australian Mathematics and Otago Problem Solving competitions are held annually.

ICAS examinations are for students in Year 4 and above and are not suitable for students who struggle academically.  ICAS stands for  "International Competitions and Assessment for Schools"