Im 28 years old and plannig to go back school Do I need take either the SAT or ACT?

No, you almost certainly do not need to take the SAT or ACT to go back to school at age 28. These tests are primarily required for admission to undergraduate programs for students directly out of high school. At your age, colleges and universities will be far more interested in your prior work experience, life experiences, and any relevant college coursework or degrees you may already have. They'll focus on your application essay, letters of recommendation, and your overall academic record.