Simplify the following text for a Grade 9 native English-speaking person.
Original: The Technique said of him : As a new coach , he led Georgia Tech to three Southern Intercollegiate Athletic Association titles ( 1920 , 1921 , 1922 ) and its second national championship in 1928 .
Simplified: As coach , he led Georgia Tech to three SIAA titles ( 1920 , 1921 , 1922 ) and its second national championship in 1928 .