Confirmation exam is meant for only the newly employed in Lagos State Teaching Service Commission. It is a prerequisite for confirmation and later promotion.

If you do not work with Lagos State Government,  please don't waste N10,000, except your organisation demands for the exam, and I don't think it is possible. 
Teachers Registration Council of Nigeria (TRCN) is a professional body that conducts, screens, awards Certificate and license to every teacher who should have passed through NCE, Degree in Education or PGDE. 
If you study any course without education, you need to do PGDE (Post Graduate Diploma in Education) before TRCN will issue you its Certificate.

Thank you. 

Pls, do not fight. Emabinu