MOOCs like Khan Academy, Coursera etc. have a very low completion rate even among adults. The completion rate is less than 5%.
The situation is even worse for teenagers who do not have the self-discipline to stick around and focus. Last but not least, according to TedX on February 2015, engagement drops to less than 50% when the video exceeds 4 minutes.
Online tutoring offers more than that. Every session is recorded, and students can watch the session at will.
Online tutoring has many advantages: It does not require the parent to be involved, it is interactive, and it is the natural evolution of traditional tutoring courses as it brings transparency to the whole process allowing students to rewatch the recorded sessions, at will, if they still have questions.
For quality assurance and training purposes, tutors can also watch the session and improve their teaching skills.
The same applies to parents who have the time and desire to get involved.
Every man without data is just another man with an opinion. According to Benjamin Bloom there is a 2 standard deviation improvement, from C to A when personalized learning is applicable.