Complex sentence: During the late 1990's $40,000 was spent on resurfacing the high school's basketball court, during this same time period the school still had an underfunded computer department and was experiencing overcrowding.
Split into simpler sentences: During the late 1990s $40,000 was spent on resurfacing the high school's basketball court. During this same time period, the school still had an underfunded computer department and was experiencing overcrowding.