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GFI & SFI: the assessment systems that make formation measurable.

The Gayle Formation Index and Student Formation Index translate Gayle Formation Theory into rigorous, defensible data your leaders can report and your funders can trust.

GayleSolutions 

District inquiries, proposals, licensing, consulting & speaking: info@gaylesolutions.com

© 2026 Gayle Solutions. Gayle Formation Theory (GFT), the Gayle Formation Index (GFI), and the Student Formation Index (SFI) are proprietary frameworks of Gayle Solutions. All rights reserved.

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