Complex sentence: Blair High School was one of many PUSD high schools threatened to be shut down due to budget cuts.However a stong showing of community support was able to convince the Pasadena school board to keep Blair open.
Split into simpler sentences: Blair High School was one of many PUSD high schools threatened to be shut down due to budget cuts. However, a stong showing of community support was able to convince the Pasadena school board to keep Blair open.