Knowledgeable Tutors

I typically do. Some one interview with them to determine their paticular learning style and the motivational factors that will inspire them to excel and succeed. 

In my discipline of psychology I have received comprehensive training on Behavioral Psychology, Fundamental Psychology 1and 2, as well as Adolecent and Developmental Psychology. I also aquired extensive knowledge on Learning Theory,   Educational Psychology, Social Psychology, and Applied Behavioral Analysis, as well as motivational learning. 

$20/hour and a session is often 1 or 2 hours.

While I was working on my bachelor's in psychology I started tutoring because I was already making lots of educational videos and literature for my assignments.

Mainly, I have worked with young adults that just needed tutoring, but some have had certain learning disabilities.  I have also worked with one 3 year old with a form of ASD and a handful of teenagers . 

When I was teaching a student that I couldn't tell if he was listening at all and come to find out one day he recited nearly everything I had taught him perfectly. 

I would suggest that they hire someone based on their teaching style and intrinsic abilities, as well as their overall motivational skills. 

Everyone should think all questions through before asking them.  However, students are learning and their minds are accelerating at super high speeds, as they are forming brand new neurons and at times going through neurogenesis as a result of the learning process.  Therefore, students will have many questions that are not thought completely through, because the questions are a part of the investigative learning process.