The Addis Ababa Embassy has some good additional information on its website. The Bachelors and Masters are helpful BUT some embassies have been picky about the high school education and have not even considered the degrees. However, if I understand correctly you have 5 passing grades and that should be enough. Read the statement below though and make sure you are covered.
"You must possess one of the following as evidence of your educational qualifications:
An Ethiopian Leaving Certificate Examination (12th grade) showing at least 5 passing grades, (or)
A 12th grade ESLCE and a Teacher Training certificate, (or)
Proof of graduation from the Ethiopian Military Academy (or
Proof of graduation from a TVET 10+3 program. New TVET certificates documenting levels of achievement are not accepted because they do not meet the minimum requirement of 12 years of basic education. Any educational document presented may be subject to independent verification by U.S. Embassy staff.
You must submit official copies of school transcripts along with the above certificates. These requirements are determined by U.S. immigration law, and are not determined by this Embassy."
By the way - this is the page I refer to:-
http://ethiopia.usembassy.gov/dv_requirements.html