No, teenagers of any age can apply for the exam step by step. At present, the evaluation of CPA's programming level mainly focuses on "graphical programming" and "Python programming". "Graphical Programming" is divided into three levels, and "Python Programming" is divided into four levels, which is moderately difficult and meets the programming education standards. Watermelon Maker is the first batch of "evaluation service units" authorized by the government for the national youth programming ability level. Their students won the first pass rate of CPA programming level evaluation for two consecutive years. Many students have obtained the CPA programming level evaluation certificate under the advice and guidance of the head teacher of Watermelon Maker and the competition instructor, and they are more active in learning programming after getting the CPA programming level evaluation certificate.