The screenshots below show the overall rating and comments left by hundreds of students whom David tutored from 2016 till the company discontinued tutoring services in January of 2021. Subjects taught include K-12 up to Calculus as well as higher level Math courses. Click each screenshot to enlarge it (opens in new tab). Note the overall 99.66% satisfaction rate.
***All video tutoring content displayed in “Categories” on the left is made by David. There are thousands of examples and video solutions included on this site that address content found in Algebra, Geometry, Trigonometry, Precalculus, Calculus, Probability & Statistics, and many other higher level Math & Science courses.