Tier 1 continuing education units (CEUs) were conceived to be one of the rigorous requirements of American Board of Audiology (ABA) certification programs. ABA Certification awardees were required to earn 15 hours of Tier 1 CE credits per three-year certification cycle. This content is an exclusive benefit for American Academy of Audiology members. If you're a member, log in and you'll get immediate access. Member Login If you're not yet a member, you'll be interested to know that joining not only gives you access to top-notch resources like this one, but also invitations to member-only events, inclusion in the member directory, participation in professional forums, and access to patient resources, tools, and continuing education. Join today!