I do not think that deduction 80C is allowable for tuition fee of a coaching institute. Read carefully the provision contained in [xvii] of Section 80C , given below
- (a) to any university, college, school or other educational institution situated within India;
- (b) for the purpose of full-time education of any of the persons specified in sub-section (4);“

Can a person claim 80 C deduction for the fees paid to ICAI to register himself or his son?
As the act says fees paid to any university, college, school or any other educational institutions.
In addition, ICAI is Institution of Chartered Accountant of India and it is very well authorized/approved.