Update: Prep Expert and ChangEd
01:56 | 10.13.19 | TV-PG | CC
In seasons 7 and 9, Mark Cuban invested in Prep Expert and ChangEd, which help improve students test scores and help them pay off their student loans after school. See where these two companies are today. From 'Episode 3,' season 11, episode 3 of Shark Tank. Watch Shark Tank SUNDAY 9|8c on ABC, streaming, on demand, and Hulu.