The International GCSE (IGCSE) is becoming an increasingly popular option in independent schools. The IGCSE offers more rigour and depth, than GCSE enabling the more able to be stretched while still meeting the needs of others. IGCSE can be awarded without coursework ie by 100% examination although coursework options exist. Exams are graded in the same way as GCSEs: Foundation targets grades C-G and Higher grades A*-D. Many people consider the IGCSE to be more akin to the old style O level than GCSE. For example maths IGCSE has a strong emphasis on algebra and introduces calculus, in preparation for A level maths.