Evangelos Katsioulis achieved the 3rd best performance in Thessaloniki, in the 1989 National Mathematics Contest in Greece.
He outscored on the 1993 Final National examinations in Physics in Greece having the best reported performance among more than 11,000 participants
From late 2000 till 2003, he became a member of more than 28 international high IQ societies.
In 2003, he became the 6th member of the exclusive GIGA High IQ society with a minimum entrance requirement of an IQ 196, sd 16, which is statistically expected to be achieved only by 1 individual out of 1,000,000,000 of the unselected population.
Dr Katsioulis has so far taken more than 30 high range IQ tests among the best, most recognized ones
In 2003, Evangelos Katsioulis achieved the best performance on the 2003 Cerebrals Society International Non Verbal Cognitive Performance contest with a score of 49 out of 54.
In 2009, Evangelos Katsioulis achieved the best performance on the 2009 Cerebrals Society International contest with a score of 93 out of 100