The Korean write-up describes a client who had been in Canada on a working holiday and moved to a study permit, with the school application and the permit application handled together over about a month from the first contact on August 30. The application was filed on September 15 and the approval came on September 23, about one week later.
The write-up opens by referring to an open work permit issued within a week, and also notes that as of October 20 the entry restriction was lifted for students whose visas were issued after March 18.