The Central Board of Secondary Education (CBSE) has introduced an aptitude test for class 9 and 10 to help them make a better career decision. A tool called Know Your Aptitude will be available for schools to download from January 29. The test would be voluntary and may be administered to students on any working day, said officials. There will also be a guide for teachers, a test booklet, technical manual and an answer key. A link giving scores of the students too will be available on the CBSE website from the same day. This step is taken to help the students make a better career choice and to know the IQ of them.