Jamaican and Scots
A few weeks ago I had an interesting discussion with a Jamaican poet about the Jamaican language. He told me how it is being standardised and used as a medium of instruction in schools, and is now considered a language in its own right. One advantage of using Jamaican in schools is that pupils who are hesitant to express themselves in English feel much more comfortable using Jamaican, and according to an article I found today, pupils educated bilingually in Jamaican and English tend to achieve better results and have better literacy skills in both languages than those educated solely in English.
In related news, the use of Scots in Scotland is increasing and this has had positive benefits for the pupils. According to this article, the introduction of Scots in one primary school has led to significant changes in the attitudes of some pupils. For example, boys who had little or no interest in reading really took to reading in Scots, and using the language they normally speak outside school has made them feel more engaged, comfortable and confident in school.