Complex sentence: He completed a 10 +2 Science degree from the Rajdhani College, Bhubaneswar in 1990, and his high school education from the Badagada Government High School, Bhubaneswar in 1988.
Split into simpler sentences: He completed a 10 +2 Science degree from the Rajdhani College, Bhubaneswar in 1990. His high school education from the Badagada Government High School, Bhubaneswar completed in 1988.