From Longman Dictionary of Contemporary Englishmodel prison/farm/school etcmodel prison/farm/school etcBESTa prison etc that has been specially designed or organized to be as good as possible → model
Examples from the Corpus
model prison/farm/school etc• The jail is less than a year old and has been hailed as a model prison.• Wave of unrest hits model prison.• The Economic Societies encouraged local industries, set up model farms, and sponsored new crops.• Before applying the impact of support charges, his model farm produced a farm gross margin of £101,000 under farm income-optimising calculations.• There he built a model farm specialising in truffles - the regional speciality - potatoes and nuts.• A model farm was built for the herd in 1850 but after 1870 the herd's size was never more than 100. 