Complex sentence: Today, Schurr's population has nearly doubled, and school officials expect that during the 2015-2018 school years, the population will increase to around 3,700 students.
Split into simpler sentences: Today, Schurr's population has nearly doubled. School officials expect more students to enroll throughout the school year, and during the 2015-2018 school year Schurr's population is projected to be around 3,700 students.