Apply to the Intensive English Program and change to nonimmigrant F-1 status.
When you enter the United States in nonimmigrant status, you do so for a specific purpose, such as study, work, or travel. You may enter the U.S. with one purpose and later change your purpose. When this happens, you may need to obtain a new status. Different visa/status categories allow different activities. Schedule an appointment with an international student advisor or Designated School Official (DSO) as soon as you decide to apply for a new visa/status.
An advisor at UCEDA can help you apply to study and change to F-1 student status.