Is the teacher's proxy for the doctor's examination sufficient to issue a medical certificate proving that a person is free of disabilities and driving impediments, knowing that the person does not actually suffer from any disabilities and that this is the common procedure?

It is not permissible to deputize the teacher or anyone else to issue the aforementioned medical certificate without the responsible physician examining the certificate applicant and verifying his fitness and absence of impediments to driving. The laws and regulations regarding the issuance of a driving license, which are enacted by the concerned authorities for the public interest, must be followed, and the prevalence of negligence among people holds no weight.