Is the movie From Straight A's to XXX (2017) based on a true story?

Yes, From Straight A’s to XXX (2017) is based on the true story of Miriam Weeks, a Duke University student who became a pornographic actress under the name Belle Knox in 2013.

What is the true story behind the movie From Straight A's to XXX (2017)?

The true story behind the movie From Straight A’s to XXX is based on the life of Miriam Weeks, who gained notoriety under the pseudonym Belle Knox. Weeks was a Duke University student who took up pornographic work to pay off her college tuition. Her story went viral in 2013 and she quickly became a controversial figure, both embraced and attacked for her choices. In the movie, Haley Pullos portrays the character loosely based on Weeks as “Miriam Weeks,” who struggles to juggle her personal and academic life while dealing with the fallout of her decision to enter the porn industry.