| Application deadline | Unconfirmed — check official site | March 1, 2027 (2027 cycle) | Unconfirmed — check official site |
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| Cost | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Financial aid | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Expenses and aid conditions | Last year's cycle (2026): SPROG 2026 ticket: $0. Participants could select the USD 0 option with the published SPROG26 code.; Optional contribution: $0–$200. Voluntary contribution toward Sierra Club's costs.; Four nights of dorm lodging and bedding: $0. Provided by the program.; Program meals: $0. All meals were provided.; 2027: Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Stipend or pay | Unconfirmed — check official site | Catalog terms: Weekly salary: $500; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Eligibility | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Additional eligibility | Ages 15–25; Requirement: Be age 15–25 by August 5, 2026; Requirement: Attend the full five-day residential session; Requirement: Provide emergency, medical, dietary, accessibility, travel, and room information; Requirement: Sign the participant waiver; Requirement: Obtain a parent signature if under 18; Exclusion: Applicants younger than 15 or older than 25 for the 2026 session | Citizenship: U.S. citizen; Residency: Enrolled at an Illinois high school; Requirement: Senior in 2027–28 or 2027 graduate; proof of insurance | Minimum age 16; Requirement: Daily Operations: age 16-20, 50+ summer service hours, interview, and mandatory orientation; Requirement: CIT: age 16+, at least two full camp weeks, interviews, and mandatory orientation and training; Requirement: Be at least 18 to assist with teen-camp weeks; Requirement: If selected, complete the City application and Level 2 background check; Exclusion: The City currently offers no Gumbo Limbo internships; Exclusion: Naturalist walks and specialized assignments require prior hours and additional training; Exclusion: Community-service hours for Daily Operations depend on completing more than 50 hours under program rules |
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| Session dates or duration | Last year's cycle (2026): Starts August 5, 2026; Ends August 9, 2026; 0.7 weeks; 2027: Unconfirmed — check official site | Starts July 12, 2027; Ends August 6, 2027; 4 weeks (2027 cycle) | Unconfirmed — check official site |
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| Format | In person | Unconfirmed — check official site | In person |
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| Housing and supervision | Residential. Supervision and housing details: Unconfirmed — check official site | Unconfirmed — check official site | Non-residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Little Switzerland, North Carolina | Unconfirmed — check official site | Boca Raton, Florida, Gumbo Limbo Nature Center and assigned environmental camp sites |
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| Selection and application | Selection: Registration-based 2026 session; capacity and selection method were not stated | Unconfirmed — check official site | Selection: Only 35 applicants were accepted across the two 2026 summer tracks; interviews, availability, and program fit determine selection. Application materials: Interview with the volunteer coordinator for Daily Operations; Interviews with the volunteer coordinator and camp director for CIT |
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| Official sources | Source 1 · checked 2026-08-20Source 2 · checked 2026-08-20Source 3 · checked 2026-08-20 | Source 1 · checked 2026-10-10 | Source 1 · checked 2026-10-09Source 2 · checked 2026-08-22Source 3 · checked 2026-08-22 |
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