 By calculating the average score of the school from 2002 to 2007, it is ranked second best school in the province with a score of 9.9 right behind Collège Jean-de-Brébeuf and Collège Jean-Eudes both with scores of 10.0.As of 2007's report, Jean de la Mennais has a mark of 9.9 which makes it the fourth highest ranked high school out of more than 400 in the province and the best high school on the South Shore of Montreal for many years in a row.Jean de la Mennais is often regarded as one of the most prestigious secondary institutions on the South Shore of Montreal.