Complex sentence: It is one of the most successful public schools in Kuching city as throughout the years of it's establishment, SMKBL never failed to produce quality students and it is always competing for the pride of being one of the best public schools in Sarawak.
Split into simpler sentences: It is one of the most successful public schools in Sarawak and Kuching city. Throughout the years of it's establishment, SMKBL never failed to produce quality students and it is always competing for the pride of being one of the best public schools in Sarawak.