Complex sentence: Founded in 1988 by Nelia Barlis, it was once a small pre-school with a small faculty, but later expanded to a faculty of 104 teachers and almost 3,000 students.
Split into simpler sentences: Founded in 1988 by Nelia Barlis, it was once a small pre-school with a small faculty. Now, it has dramatically expanded to almost a faculty of 104 teachers and almost 3,000 students.