Proviso East High School

CTL-E-5771 · School · high-school · 1911–present

VERIFIED evidence grade — build store (JSON graph)

Combined Graph record U-07034 · provenance: build store (JSON graph), record CTL-E-5771.

Proviso East High School is a public secondary school at 807 South First Avenue in Maywood, Illinois, the original campus of Proviso Township High Schools District 209. It opened in 1911 as Proviso Township High School and took the East name in 1958, when the district split its growing enrollment with the new Proviso West High School. The school, whose teams are the Pirates, serves Maywood and the neighboring villages of Broadview, Forest Park, and Melrose Park. Its alumni line runs from astronaut Eugene Cernan and linebacker Ray Nitschke to civil rights leader Fred Hampton and one of the deepest basketball alumni lists in Illinois: the school won its first state basketball championship in 1969, and its graduates include Jim Brewer, Michael Finley, and Glenn "Doc" Rivers, class of 1980, whose jersey is displayed at the school. In the 2010 NBA Finals, three Proviso East graduates — Rivers coaching Boston, Finley playing for Boston, and Shannon Brown playing for Los Angeles — appeared in the same series. Enrollment was reported at 1,663 students for 2024–25.

The record

• Also known as: Proviso Township High School, Proviso East, Proviso

Notes

STAGED 2026-10-16 (747 Program, Named Remainders & Further Gaps, Batch A) — not merged; awaits founder merge go. Gate A: PASS — no graph record under the name. Peer model: Simeon Career Academy (CTL-E-5491), INST-001. Source conflict SHOWN, not blended: the school reference gives 'opened 1911' (cornerstone laid January 21, 1911), while the Forest Park Review's alumni history says the school 'was founded in 1910' — the description carries 1911 as the opening year and this note carries the 1910 founding claim; a merge editor should not silently harmonize them. A second address form, 803 S. 1st Ave., appears in 2021 event coverage of the school; the standing address carried is 807 South First Avenue per the school reference and district usage. Edges staged: has_alumnus to CTL-E-5511 (Doc Rivers) — the edge the Sports Bench packet documented as blocked. Map: FILLED (see media). Photo: HELD. MEDIA LAYER (staged 2026-10-16; full per-asset PHOTO-001 records + embed specs in the packet's staged JSON, Drive packet folder): map = FILLED (Address-based map spec on a sourced street address.) | visual_assets = HELD: No file-page-level PHOTO-001 license verification completed at staging; the early-20th-century postcard image | chart = FILLED (CTL-created timeline built only from this record's sourced facts (institutional timeline).) | video = HELD (No CTL Short in the Shorts Link Map catalog (shorts-link-map-2026-10-15.json, 233 entries, searched by name st) | audio = HELD (No CTL-owned or rights-cleared matching-entity audio exists at staging; slot held with reason.)

Relationships

• Doc Rivers — has alumnus
  Glenn 'Doc' Rivers, raised in Maywood, starred at Proviso East High School and graduated in the class of 1980 (graph record CTL-E-5511; ESPN, June 10, 2010). The Sports Bench packet documented this has_alumnus edge (School→Person) as blocked on the missing school endpoint; this packet supplies it.

Sources

• Wikipedia, 'Proviso East High School' — 807 South First Avenue, Maywood, IL 60153; opened 1911; Proviso Township High Schools District 209; Pirates; enrollment 1,663 (2024–25), accessed 2026-10-16 (build store)
• ESPN, 'Lakers, Celtics share Chicago roots,' June 10, 2010 — the 2010 NBA Finals featured three Proviso East graduates: Doc Rivers (class of 1980) and Michael Finley for Boston, Shannon Brown for Los Angeles, accessed 2026-10-16 (build store)
• Forest Park Review, 'Pirate Pride built on history, struggle and fun, alums say,' July 12, 2022 — school became Proviso East in 1958 when Proviso West opened; first state basketball championship in 1969; Doc Rivers, class of 1980, is a grandson of early Black graduate Arwilder Lyles, accessed 2026-10-16 (build store)
• CultureTechLens knowledge graph, CTL-E-5511 (Doc Rivers) — Rivers was raised in Maywood and starred at Proviso East High School; Marquette retired his No. 31, accessed 2026-10-16 (build store)

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Record CTL-E-5771 · Combined Graph record U-07034 · CultureTechLens Knowledge Graph · 4 sources · 1 mapped relationship.
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Researched and maintained by the CultureTechLens research program · CultureTechLens Combined Graph, Release 2026-11-04. Corrections are public: the corrections log.

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