Private Tutors a Waste of Money!

Damn! How will we make a living?
According to a PhD study the effect of study on a students gcse grade is next to none existent. Even in maths, the subject in which tutors make the biggest difference, the effect is only to raise a student by one fifth of a gcse grade, meaning there is only a 20% chance of an individual course of tutoring not being wasted.
Of course, that study deals with tutors of varying quality, including unregulated tutors who tutor to earn a little tax free money. The government is talking of regulating the private tuition industry. This will probably push up the cost of a private tutor, but will also probably mean you can be more sure that the tutor you hire is qualified, experienced, checked and paying their taxes.