British-Nigerian school celebrates student with all subjects on grade A in IGCSE result A British-Nigeria school, Waldorf Knoll Academy, located in Abuja has congratulated one of its valedictorians, Rahila Ibrahim Tumsa, aged 17 years, who scored all subjects A in her International General Certificate of Secondary Education (IGCSE) result for the 2021/2022 section. IGCSE, developed by the University of Cambridge International Examination, is an English language-based examination recognised in the United Kingdom as being equivalent to the General Certificate of Secondary Education (GCSE). In an Instagram post by the school, they wrote,...