school, that's the rally for a popular but struggling charter schoos tha set to cle. megan fitzgerald explains what the community is doing to try keep it open. >> reporter: you may remember collegiate prep high school as a success story for so many students. >> i'm taking my academic talent to universit -- >> reporter: this was in 2017 when the graduating class celebrated after every senior was accepted into college. but these students could be one of the last to graduate, the school is being forced to shutdown next year. >> they said we needed to be closed because we demonstrated a low graduation rate. >> reporter: the school's ceo is referring to the d.c. public charter school board. the board voted to close the school in 2020 because they said it had performance issues like low test scores, reenrollment rate, and graduation rate over the last few years. > we had some error in our processes. >> reporter: ross says the class of 2018 lost several of its students who moved to different areas and schools, and they didn't keep track. so it looked like d theypped out of school, when she said that wasn't the case. the school says for a decade they have invested in had and changed thees lf so many