PayScale.com indicated that the middle-half salary range for tutors employed by major tutoring providers in May 2011 was between $10.10 and $17.50 per hour. These services screen and train tutors for you, and may even offer you a money back guarantee if your child's grades don't improve.
Definition of 'limiting factor'. limiting factor in American. an environmental factor that limits the growth or activities of an organism or that restricts the size of a population or its geographical range.
a limiting condition; restrictive weakness; lack of capacity; inability or handicap: He knows his limitations as a writer. 2. something that limits; a limit or bound; restriction: an arms limitation; a limitation on imports. 3. the act of limiting.