The phrase 'compulsory by' is not correct and usable in written English.
The more appropriate phrase in this context would be 'mandated by'. Example: All students must abide by the regulations mandated by the school.
It'll be compulsory by then.
After two years of consultation and cabinet wrangles, the bill proposes a biometric card which could become compulsory by 2013.
With free primary education compulsory by the late 19th century, basic literacy ensured that the general cultural level was raised.
At first used only in Vietnamese Christian communities, it was made compulsory by the French administration in 1910.
Evening Standard Editorial, London, November 24 "[David Blunkett] is offering a controversial bill to establish a national system of ID cards, which could become compulsory by 2012.
Some students reacted to the idea that consent workshops should be compulsory by saying this would be a "contradiction in terms".
Computerized versions on the other hand lack overviews and have a compulsory step-by-step function.
The Rivington Hall estate was acquired by compulsory purchase by Liverpool Corporation in 1902 as part of the reservoir scheme.
(The figures do not reflect premiums paid by beneficiaries or compulsory payments by states to help defray the costs).
It remained unlet for 15 years, and was, at various times, invaded by squatters and threatened with compulsory purchase by the local Camden council.
Municipal health care is mainly funded through taxation, whereas private health care and occupational health care are funded by compulsory National Health Insurance NHII) and by out-of-pocket payments.
