ISP Purworejo is a member of PSSI Central Java Province Association. Since 2010s, ISP Purworejo only played at junior-level competitions,
Soeratin Cup (U-18). But in 2021, they will also compete in Liga 3 and have a target to be a professional club and compete at the first-tier league in Indonesia,
Liga 1. During the Soeratin Cup, no achievement achieved by ISP. The best achievement was in 1986. ISP to qualify to Zone VI (
Central Java-
Yogyakarta). Unfortunately in the final, they defeated by
Persipur Purwodadi and failed to advance to the final round that being played in
Jakarta. ISP participation in
Division Three was the first time and carve performance is quite encouraging. Persekabpur is ranked 3rd and promotion to
Division Two. == Season-by-season records ==