It is difficult to provide a blanket answer to this question. Each candidate’s circumstances are different, and their method of study, experience and knowledge of English law and general ability will determine the time it takes for them to adequately prepare for each element of the QLTS assessments.
As a general guide, however, we recommend that you begin your preparation for the MCT as soon as possible, at least 3-4 months in advance. Devote as much time as you feel will progress your preparation. We would recommend an average of 10 hours a week.
That said, some candidates progress adequately with less time put in, whilst others require more. The advantage of the QLTS School preparation course is its flexibility. You can study at your own pace and according to your own family, work and social calendar.
As for the OSCE assessment, based on candidates’ experience, it is recommended to spend at least 10-12 weeks in preparation for the practical assessment.
We have also published a blog post on this topic: How Long Does it Take to Prepare for the QLTS Assessments?