Here is an article that will make your job easy, and how! It is to the point, and gives you quick dive into History of these boards, Curriculum and Course Content, Exams and Exam Boards, Assessments & Tests, Recognition of each board, and Availability!
Check it out - http://www.schoolswelike.com/homework-guide/cbse-or-icse-or-igcse-or-ib
PS: Looking for CBSE exam cheatsheets or test helps??, or ICSE Study Guides, Cheatsheets?, or IGCSE test and exam helps?
If you have been looking for list of Best CBSE Schools? Click here! List of top 10 ICSE schools can be found here, and Click here for Best IGCSE schools