Legal analysis: it can be returned. It is illegal that private classes cannot be withdrawn, even if both parties sign a contract. The contract signed for private courses has a strong personal attribute and is not an enforceable contract; Even if the contract is marked with similar clauses such as "no card return" and "once sold, the fee will not be refunded", it should be considered invalid. Tying goods against consumers' wishes or attaching other unreasonable conditions is compulsory consumption. Forced consumption behavior is suspected of forced trading, and if the circumstances are serious, it shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention, and shall also or only be fined; If the circumstances are especially serious, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than seven years and shall also be fined. Whoever commits one of the following acts by violence or threat, if the circumstances are serious, shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention, and shall also or only be fined; If the circumstances are especially serious, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than seven years and shall also be fined:

(1) buying or selling goods by force;

(2) Forcing others to provide or accept services;

(three) forcing others to participate in or withdraw from the tender and auction;

(4) Forcing others to transfer or purchase stocks, bonds or other assets of companies or enterprises;

(5) Forcing others to participate in or withdraw from specific business activities.

Legal basis: Article 24 of the Law of People's Republic of China (PRC) on the Protection of Consumer Rights and Interests. If the goods or services provided by the business operators do not meet the quality requirements, consumers may return them in accordance with the provisions of the state and the agreement of the parties, or require the business operators to fulfill the obligations of replacement and repair. If there is no state regulation and agreement between the parties, consumers can return the goods within seven days from the date of receipt; After seven days, consumers who meet the statutory conditions for terminating the contract can return the goods in time. If it does not meet the statutory conditions for terminating the contract, it may require the operator to fulfill the obligations of replacement and repair. Where goods are returned, replaced or repaired in accordance with the provisions of the preceding paragraph, the business operator shall bear the necessary expenses such as transportation.