Why is the return on investment for higher education is high even though the cost of college is increasing

Return of investment (ROI) from higher education could be extremely high. It can be measured on the salary you get from a career because of high education. It also would mean lifetime earnings as permanent jobs are usually offered when high education is achieved. Another aspect that could be considered as an investment are the skills you get which are applied in various aspects of your life. Few of these are: different experiences, various perspectives and critical thinking skills.