Is possible that educational institutes and certificates are the only witness for someone's intelligence? Apparently, it's not, because everyone has its own special interests, where he can improve his skills.
There are many people who had leave school at the age of 16 yet go on to have successful careers. This is often particularly true of people with practical skills such as carpenters or plumbers. Although they may not have passed many exams at school, they have successfully learnt a trade or skill which definitely requires intelligence. There are also further examples of people who have not achieved academic success in education.
It cannot be denied that creative or artistic ability is another form of intelligence. Musicians have the skills to perform complex pieces of music, while artists can create beautiful pieces of work through painting and sculpture.
A final example of another aspect of intelligence is knowledge, which people often acquire through self-study or experience. They may not have done well in school or university, but have become educated by learning about a subject independently or by dealing with a variety of real-life situations and problems. Indeed, there are many highly qualified, successful people who lack 'commonsense' and who would be less able to cope with such difficulties.
Consequently, it's hard to illustrate intelligence depending on the results of an exam, because a lot of people don't have the will to study, who missed the required encouragement from their families. But on the other hand, they are more motivated in real life, and they may strongly establish the identity of themselves.
Yasmina A. Hingari