As one of the most widely recognized high-quality standard stars, the Stetson standards have been used extensively as a photometric reference for calibrating other surveys. In this work, we present an independent validation and recalibration of the Stetson standard star photometry using the Best Star (BEST) database. Based on typically 30,000–70,000 calibration stars per band, we find that the original Stetson photometry achieves field-to-field zero-point precisions of approximately 10–40 mmag in the UBVRI bands. In addition, significant spatially dependent magnitude offsets are detected within individual Stetson fields for all bands, with magnitudes exceeding 1%, probably caused by calibration errors in the Stetson photometry. After correcting these systematic errors, the agreement between the Stetson and BEST photometry is improved to ∼5 mmag for individual fields for the BVRI bands. The recalibrated photometry is further validated using the stellar color regression standards, yielding agreement better than 10 mmag for individual stars in the BVRI bands and confirming zero-point precisions of 2–4 mmag in the BVI bands. The precisions are further confirmed by checks using Gaia DR3 broadband colors. These results highlight the power of the BEST database for improving photometric calibration and suggest that, if feasible, it be incorporated into the calibration process for future releases of the Stetson standard catalog.