The ACT is required in all college admission forms, except for 800. There are more than 4000 colleges in the United States. The ACT does cause stress but, it helps prepare you for college(which is full of stress). It would also help students realize that they can go to college.
Some people just don't test well be it due to nervousness or a learning disability. The ACT while a nice learning tool doesn't realistically exhibit the true academic potential of a student. The ACT can be coupled with other testing avenues, but I don't think the ACT should be the end all say all when it comes to college admittance.
Many education professionals think that students who want to enter college should take the ACT. The ACT, however, is designed to offer a standardized test of student achievement throughout the United States. It is unfairly biased toward American students and toward students in the math and science professions. Additionally, the test requirement can unfairly penalize students with severe test anxiety.