Indian-born Avichal Garga is a former Google employee who left to co-found PrepMe.com. The company describes its services as follows:

PrepMe is a premium test preparation company dedicated to
bringing high-quality, personalized test preparation to students
across the world at an affordable price. We accomplish this by using
our adaptive learning technology which identifies a student’s
strengths and weaknesses, then adapts to that student’s needs. We
couple our online curriculum and technology by hiring top students at
elite universities to be personal essay coaches for our students, to
help guide them through the program, answer their questions, and
grade their essays. We offer preparation programs for the ACT,
PSAT, and the SAT.

Garga was interviewed by the New York Times in 2008 in an article on successful second acts for Google employees.