This will depend on what you want to get out of tutoring.  If you are looking for a boost in confidence we can help at any time.  
To help with a specific exam, whether it’s SATs, GCSEs or Functional Skills, the earlier the better.  For example, a student starting in September of Year 11 will generally have only 30 sessions before their exam, whereas if they were to start at the beginning of Year 10 they would have about 70 sessions before their exams.  A Christmas start in Year 11 leaves only 15 sessions before the exam!