After 11 years, 21 highly-rated online courses, and 1.5 million students, the University of Sheffield has called it a day on producing MOOCs.

Online course platforms closely track their learners. And things have gotten worse over the past two years.

Despite assurances of sustained instructor earnings, Udemy’s policy changes delivered a $30 million pay cut, sacrificing creator income to bolster its stock value.

Prepare for exams or boost your knowledge of organic chemistry with the best courses from universities, specialist tutors, and YouTube instructors.