ChainClasses is a one-stop blockchain education solution based on ChainIDE and ChainBaaS, containing interactive video lessons, hands-on lessons that simulate a real work environment. Through standardized, structured, and systematic courses, the core knowledge of blockchain underlying technology, consensus mechanism, cryptography, and smart contract compilation is comprehensively covered. Combined with supporting textbooks, handouts, exercises, exams, etc., the learning results are statistically tracked. Hand-in-hand project development teaching can efficiently help students complete the whole process from the entry level to developing dApps.