"official examination" is correct and usable in written English.
You can use it to refer to an exam administered by a recognized institution or organization, such as an academic or professional examination. For example: "I'm preparing for my official examination next week."
When used for official examination the test results information is sent to the examiner by e-mail.
It was used for "C Programming Language" course students self-testing and official examination.
The e-testing system can be used by students for self-testing or by tutors for official examination.
All the educational systems have some sort of official examination, assessment or grading policy to measure students learning.
It appeared to confirm for the first time in an official examination many of the allegations from critics who charged that the Justice Department had become overly politicized during the Bush administration.
He is now working on a book urging the profession not to shrink from thinking in terms of evil when appraising certain offenders, even if the E-word cannot be used as part of an official examination or diagnosis.
IQ testing at age 11 12 was predictive of teacher's reports of higher levels of intelligence and health at age 16; and better performance in official examinations.
He succeeded neither academically nor financially, however, and he was unable or unwilling to pass the higher official examinations.
Because of his father's death in 794 and straitened family circumstances, Bai did not take the official examinations for the bureaucracy until the late age of 28.
They opened in a rented house, adding grades yearly until they built a small campus and a reputation for top results on official examinations — and in competitive volleyball.
A member of a literary family, the young Su Shi performed brilliantly in his official examinations and was rewarded with the first of the many official positions he occupied during his long and distinguished career.
