Complex sentence: Sunny first went to Maharaja Harisingh Agri Collegiate School, Nagbani Jammu in 2003 and completed his metric there by 2013 but later he attended SRML Higher Secondary School for his +2 studies.
Split into simpler sentences: Sunny first went to Maharaja Harisingh Agri Collegiate School in 2003 and completed his metric there by 2013. Later he attended SRML Higher Secondary School for his +2 studies.