Educational Service Unit 4 (ESU 4) is committed to providing a website that is accessible to the widest possible audience, regardless of technology or ability. This website endeavors to comply with the best practices and standards as defined by Section 508 of the U.S. Rehabilitation Act. If you would like additional assistance or have accessibility concerns, please contact the Administrator at 402-274-4354. ESU 4 is always striving to improve the accessibility standards of our website.