Hawk High

It appears that the contract `LevelOne` includes a payable function to accept Ether but lacks a corresponding function to withdraw it, which leads to the Ether being locked in the contract.

1-Locked funds -> lose the rest of `schoolFees` permanently.

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2-Contracts interacting with it may fail if they expect refunds.

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3-If the contract was meant to be upgradeable but wasn’t, the funds are just stuck.

Add a withdraw or recovery function to the contract `LevelOne`, for example:

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+ function withdraw(address payable _to) public onlyOwner {

+ _to.transfer(address(this).balance);

+ }