Puerto Rico counties ranked by the highest county-wide student-to-teacher ratio. Counties need at least 3 schools and 1,000 students to qualify. The median ranked county is at 9.8:1. Showing ranks 51 to 72.
| # | County | State | Ratio |
|---|---|---|---|
| 51 | Santa Isabel Municipio | PR | 9.5:1 |
| 52 | Utuado Municipio | PR | 9.5:1 |
| 53 | Yauco Municipio | PR | 9.5:1 |
| 54 | Cabo Rojo Municipio | PR | 9.4:1 |
| 55 | Comerío Municipio | PR | 9.4:1 |
| 56 | Mayagüez Municipio | PR | 9.4:1 |
| 57 | San Germán Municipio | PR | 9.4:1 |
| 58 | Bayamón Municipio | PR | 9.3:1 |
| 59 | Caguas Municipio | PR | 9.3:1 |
| 60 | Barceloneta Municipio | PR | 9.2:1 |
| 61 | Naranjito Municipio | PR | 9.2:1 |
| 62 | Orocovis Municipio | PR | 9.1:1 |
| 63 | Arecibo Municipio | PR | 9.0:1 |
| 64 | Ciales Municipio | PR | 9.0:1 |
| 65 | San Juan Municipio | PR | 9.0:1 |
| 66 | Cayey Municipio | PR | 8.8:1 |
| 67 | Toa Baja Municipio | PR | 8.7:1 |
| 68 | Patillas Municipio | PR | 8.6:1 |
| 69 | Manatí Municipio | PR | 8.5:1 |
| 70 | Guánica Municipio | PR | 8.4:1 |
| 71 | Salinas Municipio | PR | 8.4:1 |
| 72 | Quebradillas Municipio | PR | 8.3:1 |