CSI Charter School

Located at 26 Washington Street in Penacook, New Hampshire, CSI Charter School is an open, independent public charter district serving secondary students in grades 9 through 12. Situated in a fringe town environment within the greater Concord metropolitan area, this single-school district offers a focused educational pathway for local high schoolers seeking a close-knit academic environment. As reflected in federal education context for the 2024–2025 academic year, the school operates as a specialized educational community rooted in the local region, tailored specifically to upper-level high school programming.

Designed to deliver individualized academic support, CSI Charter School maintains a boutique operational scale with an enrollment of 34 students, predominantly composed of upperclassmen, including 6 juniors and 28 seniors. The district's staffing model strongly aligns with its commitment to small-group learning, employing a total of 7 full-time equivalent staff members. This includes 4.2 full-time equivalent teachers alongside 2.8 dedicated support personnel, resulting in an exceptionally favorable student-to-teacher ratio of approximately 8 to 1. For parents, prospective students, and education researchers exploring public charter alternatives, CSI Charter School illustrates how targeted staffing and small cohort sizes can create a highly supportive high school experience.