Complex sentence: Carlisle and its curriculum became the model for the Bureau of Indian Affairs; by 1902 there were 25 federally funded non-reservation schools in 15 states and territories, with a total enrollment of over 6,000 students.
Split into simpler sentences: Carlisle and its curriculum became the model for the Bureau of Indian Affairs. By 1902, there were 25 federally funded non-reservation schools in 15 states and territories, with a total enrollment of over 6,000 students.